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                    GNU GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007
 Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.
                            Preamble
  The GNU General Public License is a free, copyleft license for
 software and other kinds of works.
  The licenses for most software and other practical works are designed
 to take away your freedom to share and change the works.  By contrast,
 the GNU General Public License is intended to guarantee your freedom to
 share and change all versions of a program--to make sure it remains free
 software for all its users.  We, the Free Software Foundation, use the
 GNU General Public License for most of our software; it applies also to
 any other work released this way by its authors.  You can apply it to
 your programs, too.
  When we speak of free software, we are referring to freedom, not
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                       TERMS AND CONDITIONS
  0. Definitions.
  "This License" refers to version 3 of the GNU General Public License.
  "Copyright" also means copyright-like laws that apply to other kinds of
 works, such as semiconductor masks.
  "The Program" refers to any copyrightable work licensed under this
 License.  Each licensee is addressed as "you".  "Licensees" and
 "recipients" may be individuals or organizations.
  To "modify" a work means to copy from or adapt all or part of the work
 in a fashion requiring copyright permission, other than the making of an
 exact copy.  The resulting work is called a "modified version" of the
 earlier work or a work "based on" the earlier work.
  A "covered work" means either the unmodified Program or a work based
 on the Program.
  To "propagate" a work means to do anything with it that, without
 permission, would make you directly or secondarily liable for
 infringement under applicable copyright law, except executing it on a
 computer or modifying a private copy.  Propagation includes copying,
 distribution (with or without modification), making available to the
 public, and in some countries other activities as well.
  To "convey" a work means any kind of propagation that enables other
 parties to make or receive copies.  Mere interaction with a user through
 a computer network, with no transfer of a copy, is not conveying.
  An interactive user interface displays "Appropriate Legal Notices"
 to the extent that it includes a convenient and prominently visible
 feature that (1) displays an appropriate copyright notice, and (2)
 tells the user that there is no warranty for the work (except to the
 extent that warranties are provided), that licensees may convey the
 work under this License, and how to view a copy of this License.  If
 the interface presents a list of user commands or options, such as a
 menu, a prominent item in the list meets this criterion.
  1. Source Code.
  The "source code" for a work means the preferred form of the work
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  All rights granted under this License are granted for the term of
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 occurring solely as a consequence of using peer-to-peer transmission
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 nothing other than this License grants you permission to propagate or
 modify any covered work.  These actions infringe copyright if you do
 not accept this License.  Therefore, by modifying or propagating a
 covered work, you indicate your acceptance of this License to do so.
  10. Automatic Licensing of Downstream Recipients.
  Each time you convey a covered work, the recipient automatically
 receives a license from the original licensors, to run, modify and
 propagate that work, subject to this License.  You are not responsible
 for enforcing compliance by third parties with this License.
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 Corresponding Source of the work from the predecessor in interest, if
 the predecessor has it or can get it with reasonable efforts.
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 rights granted or affirmed under this License.  For example, you may
 not impose a license fee, royalty, or other charge for exercise of
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  11. Patents.
  A "contributor" is a copyright holder who authorizes use under this
 License of the Program or a work on which the Program is based.  The
 work thus licensed is called the contributor's "contributor version".
  A contributor's "essential patent claims" are all patent claims
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 but do not include claims that would be infringed only as a
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 patent against the party.
  If you convey a covered work, knowingly relying on a patent license,
 and the Corresponding Source of the work is not available for anyone
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 then you must either (1) cause the Corresponding Source to be so
 available, or (2) arrange to deprive yourself of the benefit of the
 patent license for this particular work, or (3) arrange, in a manner
 consistent with the requirements of this License, to extend the patent
 license to downstream recipients.  "Knowingly relying" means you have
 actual knowledge that, but for the patent license, your conveying the
 covered work in a country, or your recipient's use of the covered work
 in a country, would infringe one or more identifiable patents in that
 country that you have reason to believe are valid.
  If, pursuant to or in connection with a single transaction or
 arrangement, you convey, or propagate by procuring conveyance of, a
 covered work, and grant a patent license to some of the parties
 receiving the covered work authorizing them to use, propagate, modify
 or convey a specific copy of the covered work, then the patent license
 you grant is automatically extended to all recipients of the covered
 work and works based on it.
  A patent license is "discriminatory" if it does not include within
 the scope of its coverage, prohibits the exercise of, or is
 conditioned on the non-exercise of one or more of the rights that are
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 in the business of distributing software, under which you make payment
 to the third party based on the extent of your activity of conveying
 the work, and under which the third party grants, to any of the
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 for and in connection with specific products or compilations that
 contain the covered work, unless you entered into that arrangement,
 or that patent license was granted, prior to 28 March 2007.
  Nothing in this License shall be construed as excluding or limiting
 any implied license or other defenses to infringement that may
 otherwise be available to you under applicable patent law.
  12. No Surrender of Others' Freedom.
  If conditions are imposed on you (whether by court order, agreement or
 otherwise) that contradict the conditions of this License, they do not
 excuse you from the conditions of this License.  If you cannot convey a
 covered work so as to satisfy simultaneously your obligations under this
 License and any other pertinent obligations, then as a consequence you may
 not convey it at all.  For example, if you agree to terms that obligate you
 to collect a royalty for further conveying from those to whom you convey
 the Program, the only way you could satisfy both those terms and this
 License would be to refrain entirely from conveying the Program.
  13. Use with the GNU Affero General Public License.
  Notwithstanding any other provision of this License, you have
 permission to link or combine any covered work with a work licensed
 under version 3 of the GNU Affero General Public License into a single
 combined work, and to convey the resulting work.  The terms of this
 License will continue to apply to the part which is the covered work,
 but the special requirements of the GNU Affero General Public License,
 section 13, concerning interaction through a network will apply to the
 combination as such.
  14. Revised Versions of this License.
  The Free Software Foundation may publish revised and/or new versions of
 the GNU General Public License from time to time.  Such new versions will
 be similar in spirit to the present version, but may differ in detail to
 address new problems or concerns.
  Each version is given a distinguishing version number.  If the
 Program specifies that a certain numbered version of the GNU General
 Public License "or any later version" applies to it, you have the
 option of following the terms and conditions either of that numbered
 version or of any later version published by the Free Software
 Foundation.  If the Program does not specify a version number of the
 GNU General Public License, you may choose any version ever published
 by the Free Software Foundation.
  If the Program specifies that a proxy can decide which future
 versions of the GNU General Public License can be used, that proxy's
 public statement of acceptance of a version permanently authorizes you
 to choose that version for the Program.
  Later license versions may give you additional or different
 permissions.  However, no additional obligations are imposed on any
 author or copyright holder as a result of your choosing to follow a
 later version.
  15. Disclaimer of Warranty.
  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
 APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
 HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
 OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
 THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
 IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
 ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
  16. Limitation of Liability.
  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
 THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
 GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
 USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
 DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
 PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
 EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
 SUCH DAMAGES.
  17. Interpretation of Sections 15 and 16.
  If the disclaimer of warranty and limitation of liability provided
 above cannot be given local legal effect according to their terms,
 reviewing courts shall apply local law that most closely approximates
 an absolute waiver of all civil liability in connection with the
 Program, unless a warranty or assumption of liability accompanies a
 copy of the Program in return for a fee.
                     END OF TERMS AND CONDITIONS
            How to Apply These Terms to Your New Programs
  If you develop a new program, and you want it to be of the greatest
 possible use to the public, the best way to achieve this is to make it
 free software which everyone can redistribute and change under these terms.
  To do so, attach the following notices to the program.  It is safest
 to attach them to the start of each source file to most effectively
 state the exclusion of warranty; and each file should have at least
 the "copyright" line and a pointer to where the full notice is found.
    <one line to give the program's name and a brief idea of what it does.>
    Copyright (C) <year>  <name of author>
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 Also add information on how to contact you by electronic and paper mail.
  If the program does terminal interaction, make it output a short
 notice like this when it starts in an interactive mode:
    <program>  Copyright (C) <year>  <name of author>
    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.
 The hypothetical commands `show w' and `show c' should show the appropriate
 parts of the General Public License.  Of course, your program's commands
 might be different; for a GUI interface, you would use an "about box".
  You should also get your employer (if you work as a programmer) or school,
 if any, to sign a "copyright disclaimer" for the program, if necessary.
 For more information on this, and how to apply and follow the GNU GPL, see
 <https://www.gnu.org/licenses/>.
  The GNU General Public License does not permit incorporating your program
 into proprietary programs.  If your program is a subroutine library, you
 may consider it more useful to permit linking proprietary applications with
 the library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.  But first, please read
 <https://www.gnu.org/licenses/why-not-lgpl.html>.
@@ -0,0 +1,451 @@
 # MXL Player
 MXL Player is a desktop and command-line controlled player for local
 [Media eXchange Layer](https://github.com/dmf-mxl/mxl) audio and video flows.
 It can play either feed independently, play both simultaneously, or switch a
 configured pair into and out of native MXL synchronization while running.
 The application uses SDL3 for its window, input, and audio output; Vulkan for
 video and ImGui rendering; and
 [`go-mxl`](https://github.com/qvest-digital/go-mxl) for MXL access.
 > [!IMPORTANT]
 > This project is under active development. Linux is the currently tested
 > platform. macOS support through Vulkan/MoltenVK is being tested. Packaging,
 > stable releases, and MXL Fabrics support are planned.
 ## Features
 - Video-only and audio-only playback.
 - Independent audio and video feeds, including feeds from different domains.
 - Native synchronized audio/video playback when both feeds are compatible.
 - Runtime feed apply, stop, resume, remove, and replacement.
 - Runtime synchronization enable/disable.
 - Finite or unlimited reconnect attempts with exponential backoff.
 - JSON playlists with manual selection, timed advance, looping, and failure
  policies.
 - Playback, media, timing, retry, and dropped-frame statistics.
 - Fullscreen mode and an empty idle window when no video is active.
 - Embedded UI font; no system font installation is required.
 ## Current requirements
 - Go 1.26 or newer.
 - A C/C++ build toolchain for cgo dependencies.
 - A compatible shared build of `libmxl` and its development headers.
 - pkg-config metadata for `libmxl`.
 - SDL3 shared library.
 - Vulkan loader and a working Vulkan driver.
 The project currently pins:
 ```text
 github.com/qvest-digital/go-mxl v1.1.0-rc.2
 ```
 The headers used while building and the `libmxl.so` loaded at runtime must be
 compatible. In particular, synchronized playback requires the native symbol:
 ```text
 mxlCreateFlowSynchronizationGroup
 ```
 Check it with:
 ```sh
 nm -D /path/to/libmxl.so | grep mxlCreateFlowSynchronizationGroup
 ```
 ## Building on Linux
 First verify that pkg-config resolves the intended MXL installation:
 ```sh
 pkg-config --modversion libmxl
 pkg-config --cflags --libs libmxl
 pkg-config --variable=pcfiledir libmxl
 pkg-config --variable=libdir libmxl
 ```
 If MXL is installed in a nonstandard prefix:
 ```sh
 export MXL_PREFIX=/opt/mxl/1.2.0
 export PKG_CONFIG_PATH="$MXL_PREFIX/lib/pkgconfig"
 export LD_LIBRARY_PATH="$MXL_PREFIX/lib${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}"
 ```
 Then build and test:
 ```sh
 go mod download
 go test ./...
 mkdir -p build
 go build -o build/mxl-player ./cmd/mxl-player
 ```
 Confirm which native library the executable will use:
 ```sh
 ldd build/mxl-player | grep libmxl
 ```
 Do not copy a `libmxl.pc` file containing paths from another computer. A
 relocatable SDK file can use `${pcfiledir}` to describe its own location.
 ## macOS status
 The SDL3 and Vulkan loaders contain macOS library-name support. The Vulkan
 dependency is temporarily replaced by a portability fork while the upstream
 change is reviewed.
 A macOS source build currently requires:
 - Xcode Command Line Tools;
 - Go;
 - SDL3;
 - Vulkan loader and MoltenVK;
 - a macOS build of libmxl with matching headers and pkg-config metadata.
 Nonstandard loader locations can be supplied explicitly:
 ```sh
 export SDL3_LIBRARY=/absolute/path/to/libSDL3.dylib
 export VULKAN_LIBRARY=/absolute/path/to/libvulkan.dylib
 ```
 These variables should not be necessary once the libraries are installed in a
 normal dynamic-loader path. A self-contained `.app` bundle is planned but does
 not exist yet.
 ## Running
 Start with no configured feed and enter domains/UUIDs in the GUI:
 ```sh
 ./build/mxl-player
 ```
 Video only:
 ```sh
 ./build/mxl-player \
  --domain /dev/shm/mxl \
  --video VIDEO_UUID
 ```
 Audio only:
 ```sh
 ./build/mxl-player \
  --domain /dev/shm/mxl \
  --audio AUDIO_UUID
 ```
 Independent video and audio:
 ```sh
 ./build/mxl-player \
  --video-domain /dev/shm/video \
  --video VIDEO_UUID \
  --audio-domain /dev/shm/audio \
  --audio AUDIO_UUID
 ```
 Start a compatible pair synchronized:
 ```sh
 ./build/mxl-player \
  --domain /dev/shm/mxl \
  --video VIDEO_UUID \
  --audio AUDIO_UUID \
  --sync
 ```
 Synchronization is not a permanent startup mode. It can be enabled and
 disabled at runtime from the settings window.
 ## Command-line options
 | Option | Short | Meaning |
 |---|---:|---|
 | `--help` | `-h` | Show help and exit. |
 | `--domain PATH` | `-d` | Default domain for feeds without a specific domain. |
 | `--video-domain PATH` | | Domain for the video feed. |
 | `--audio-domain PATH` | | Domain for the audio feed. |
 | `--video UUID` | `-v` | Initial video flow UUID. |
 | `--audio UUID` | `-a` | Initial audio flow UUID. |
 | `--sync` | `-s` | Start a configured A/V pair synchronized. |
 | `--max-attempts N` | | Attempts per playback lifecycle; `0` means unlimited. |
 | `--playlist FILE` | | Load a JSON playlist. |
 | `--fullscreen` | `-f` | Start fullscreen. |
 | `--gpu-id N` | `-g` | Select GPU ID; currently incomplete. |
 | `--playback-id N` | `-p` | Select the SDL playback-device ID. |
 | `--list-playback` | | List SDL playback devices and exit. |
 | `--list-gpu` | | List Vulkan physical devices and exit. |
 | `--verbose` | | Reserved; currently incomplete. |
 Run `./build/mxl-player --help` for the authoritative list.
 ## GUI controls
 The settings window accepts separate video/audio domains and UUIDs.
 - **Apply feeds** applies the complete desired configuration.
 - **Stop** stops a feed while retaining its UUID and domain.
 - **Resume** starts a stopped configured feed with a fresh lifecycle.
 - **Remove** stops a feed and clears its configuration.
 - **Stop all** and **Resume all** operate on both configured feeds.
 - **Synchronize** switches a compatible active pair between synchronized and
  independent playback.
 Keyboard shortcuts:
 | Key | Action |
 |---|---|
 | `F1` | Show or hide settings. |
 | `F2` | Show or hide statistics. |
 | `F` | Toggle fullscreen. |
 | `Q` or `Esc` | Quit. |
 ## Retry behavior
 Each playback lifecycle starts at attempt 1. Failed connections/readers are
 retried with exponential delay from 500 ms up to 5 seconds.
 ```sh
 # Retry indefinitely
 ./build/mxl-player -d /dev/shm/mxl -v VIDEO_UUID --max-attempts 0
 # Stop after three failed attempts
 ./build/mxl-player -d /dev/shm/mxl -v VIDEO_UUID --max-attempts 3
 ```
 With independent A/V, one failed feed retries without stopping the other. A
 synchronized pair reconnects as one lifecycle.
 ## Playlists
 Start a playlist with:
 ```sh
 ./build/mxl-player --playlist playlist.json
 ```
 Example:
 ```json
 {
  "loop": true,
  "on_failure": "next",
  "retry": {
    "max_attempts": 3,
    "initial_delay": "500ms",
    "max_delay": "5s"
  },
  "entries": [
    {
      "name": "Synchronized pair",
      "video": {
        "domain": "/dev/shm/mxl",
        "uuid": "VIDEO_UUID"
      },
      "audio": {
        "domain": "/dev/shm/mxl",
        "uuid": "AUDIO_UUID"
      },
      "sync": true,
      "duration": "10s"
    },
    {
      "name": "Video only",
      "video": {
        "domain": "/dev/shm/mxl",
        "uuid": "ANOTHER_VIDEO_UUID"
      },
      "duration": "15s"
    },
    {
      "name": "Audio until manually advanced",
      "audio": {
        "domain": "/dev/shm/mxl",
        "uuid": "ANOTHER_AUDIO_UUID"
      }
    }
  ]
 }
 ```
 Playlist rules:
 - `duration` uses Go duration syntax such as `500ms`, `10s`, or `2m`.
 - Missing/empty duration means manual advance.
 - `loop: true` returns to the first entry after the last.
 - `on_failure: "wait"` remains on an exhausted entry.
 - `on_failure: "next"` advances after retry exhaustion.
 - A synchronized entry must contain both video and audio.
 - Playlist retry settings override the CLI defaults unless
  `--max-attempts` was explicitly supplied.
 The GUI supports entry selection, previous/next navigation, and pausing or
 resuming a timed entry.
 ## Development checks
 ```sh
 go fmt ./...
 go test ./...
 go test -race ./internal/playback ./cmd/mxl-player
 go vet ./...
 ```
 Live media and GPU/audio integration still require real MXL producers and are
 not covered by the unit test suite.
 ## Architecture
 Playback workers own individual reader lifecycles and retries. Slots ensure
 that only one worker lifecycle for a feed or synchronized pair runs at a time.
 The session controller converts the complete desired feed state into an
 independent or synchronized execution plan. Playlist logic sends the same
 session commands as the GUI, so it does not bypass lifecycle rules.
 ```mermaid
 flowchart TD
    CLI[CLI startup configuration]
    GUI[ImGui controls]
    PC[PlaylistController]
    PEC[PlaylistEventCoordinator]
    CMD[SessionCommand channel]
    SC[SessionController]
    PLAN[SessionPlan]
    VS[VideoSlot]
    AS[AudioSlot]
    SS[SyncSlot]
    VW[VideoWorker]
    AW[AudioWorker]
    SW[SyncWorker]
    VF[VideoFactory]
    AF[AudioFactory]
    SF[SyncFactory]
    MXL[go-mxl / libmxl]
    VB[VideoBridge]
    VR[Vulkan renderer]
    AO[SDL audio sink]
    STATUS[StatusStore]
    MEDIA[MediaStatsStore]
    CLI --> CMD
    GUI --> CMD
    PC --> CMD
    CMD --> SC
    SC --> PLAN
    PLAN -->|independent video| VS
    PLAN -->|independent audio| AS
    PLAN -->|synchronized pair| SS
    VS --> VW --> VF --> MXL
    AS --> AW --> AF --> MXL
    SS --> SW --> SF --> MXL
    VW --> VB --> VR
    SW --> VB
    AW --> AO
    SW --> AO
    VW --> STATUS
    AW --> STATUS
    SW --> STATUS
    VW --> MEDIA
    AW --> MEDIA
    SW --> MEDIA
    STATUS --> GUI
    MEDIA --> GUI
    STATUS --> PEC
    SC --> PEC
    PC --> PEC
    PEC --> PC
 ```
 ### Main entities
 | Entity | Responsibility |
 |---|---|
 | `SessionConfig` | Complete desired state of both feeds, synchronization request, and retry policy. |
 | `SessionCommand` | One user or playlist request that produces a new desired session state. |
 | `SessionController` | Owns the current desired state and reconciles it with the required topology. |
 | `SessionPlan` | Validated execution plan: idle, independent feeds, or one synchronized pair. |
 | `VideoSlot` / `AudioSlot` | Own replacement and cancellation of one independent worker lifecycle. |
 | `SyncSlot` | Owns replacement and cancellation of the synchronized pair lifecycle. |
 | Workers | Open readers, consume media, apply retry policy, and publish lifecycle status. |
 | MXL adapter factories | Translate `go-mxl` readers, metadata, and errors into playback contracts. |
 | `VideoBridge` | Transfers the latest borrowed video frame safely to the render loop. |
 | `SDLAudioSink` | Interleaves planar F32 samples and manages SDL audio queueing. |
 | `StatusStore` | Holds the latest lifecycle status for each playback unit. |
 | `MediaStatsStore` | Holds feed metadata and received-media counters for diagnostics. |
 | `PlaylistController` | Owns selection, timing, looping, navigation, and failure policy. |
 | `PlaylistEventCoordinator` | Observes session/status state and tells the playlist when an entry is ready or exhausted. |
 ### Ownership rules
 - Every incoming feed configuration represents the complete desired state for
  that slot.
 - A slot cancels and joins its current worker before starting a replacement;
  two worker lifecycles for one slot must never overlap.
 - Invalid commands do not disturb the current valid session.
 - Independent audio and video fail and retry independently.
 - A synchronized pair fails and retries as one lifecycle.
 - Runtime synchronization changes topology; it is not a startup-only mode.
 - Cancellation flows from the application context through controllers, slots,
  workers, readers, and sinks.
 - Playback owns lifecycle policy. Adapters know MXL details, while renderer,
  audio output, GUI, and playlists do not.
 ### Source layout
 | Path | Contents |
 |---|---|
 | `cmd/mxl-player` | Composition root, CLI, main loop, GUI, and playlist file decoding. |
 | `internal/playback` | Transport-independent state, workers, slots, controllers, retry, playlist, and statistics. |
 | `internal/adapter/mxl` | Local MXL implementations of playback reader contracts. |
 | `internal/source` | Low-level local MXL video/audio access and error translation. |
 | `internal/output` | SDL audio sink and sample interleaving. |
 | `internal/renderer` | Vulkan video rendering. |
 | `internal/imgui` | ImGui SDL input and Vulkan rendering integration. |
 | `internal/sdl` | Minimal dynamically loaded SDL3 bindings used by the player. |
 | `internal/assets` | Embedded UI assets and their licenses. |
 MXL Fabrics is planned as an ingress transport that writes remote data into a
 local MXL flow; it will not be implemented as a separate playback backend. See
 [`MXLFABRICS_PLAN.md`](MXLFABRICS_PLAN.md).
 ## Known limitations
 - Linux is the only platform currently exercised regularly.
 - macOS/MoltenVK support is not yet release-tested.
 - Windows support is not currently claimed.
 - GPU selection and verbose logging flags are incomplete.
 - There are no prebuilt packages or application bundles yet.
 - MXL Fabrics ingress is planned but not implemented.
 - Native MXL headers and runtime libraries must be ABI-compatible.
 ## Third-party assets
 The embedded JetBrainsMonoNL Nerd Font Mono is distributed under the SIL Open
 Font License 1.1. Its copyright notice, license, and source information are in
 [`internal/assets/fonts`](internal/assets/fonts/).
 ## License
 MXL Player is licensed under the GNU General Public License, version 3 or any
 later version. See [`LICENSE`](LICENSE).
 The embedded font retains its separate SIL Open Font License 1.1.
@@ -23,7 +23,7 @@ import (
 const (
 	APP_NAME         = "MXL Player"
-	APP_VER          = "1.0.0"
+	APP_VER          = "0.3.0"
 	WIN_WIDTH  int32 = 1280
 	WIN_HEIGHT int32 = 720
 )
@@ -7,7 +7,7 @@ require (
 	github.com/ebitengine/purego v0.10.2
 )
-require github.com/qvest-digital/go-mxl v1.1.0-rc.1
+require github.com/qvest-digital/go-mxl v1.1.0-rc.2
 require github.com/spf13/pflag v1.0.10
@@ -4,7 +4,7 @@ github.com/JohannesItten/vulkan-go v0.0.0-20260903100450-2f1650464726 h1:4gRCj5R
 github.com/JohannesItten/vulkan-go v0.0.0-20260903100450-2f1650464726/go.mod h1:DIo6W2yFav1DflNKc0W0Oc7mecbdBg2btsaHhIYmwUA=
 github.com/ebitengine/purego v0.10.2 h1:W809HbnvzAxgdm+aOvlSekrM16wGCdT/e76+9tS7gzE=
 github.com/ebitengine/purego v0.10.2/go.mod h1:iIjxzd6CiRiOG0UyXP+V1+jWqUXVjPKLAI0mRfJZTmQ=
-github.com/qvest-digital/go-mxl v1.1.0-rc.1 h1:CUg29Q5c/JA6pqyA5gP3vu7JBr8lRXbOOxC+r0W572s=
+github.com/qvest-digital/go-mxl v1.1.0-rc.2 h1:J1EiiOwy9cEZK1djv8uI3fFP2Oq228Y2Sft/y5sE6D4=
-github.com/qvest-digital/go-mxl v1.1.0-rc.1/go.mod h1:cYzyT+S/AONytsKr/DozzFQP2OrNrg/JsQOSjvwn+Rk=
+github.com/qvest-digital/go-mxl v1.1.0-rc.2/go.mod h1:cYzyT+S/AONytsKr/DozzFQP2OrNrg/JsQOSjvwn+Rk=
 github.com/spf13/pflag v1.0.10 h1:4EBh2KAYBwaONj6b2Ye1GiHfwjqyROoF4RwYO+vPwFk=
 github.com/spf13/pflag v1.0.10/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
@@ -9,7 +9,7 @@ Size=700,720
 Collapsed=0
 [Window][Stats]
-Pos=820,0
+Pos=1460,0
 Size=460,510
 Collapsed=0
@@ -0,0 +1,12 @@
 #!/bin/bash
 VIDEO_ID="5fbec3b1-1b0f-417d-9059-8b94a47197ed"
 AUDIO_ID="5fbec3b1-1b0f-417d-9059-8b94a47197ec"
 VIDEO_URI=$1
 if [[ -z "${VIDEO_URI}" ]] then
    VIDEO_URI="${HOME}/Videos/test-vid/timelapse_spb.ts"
 fi
 export GST_PLUGIN_PATH="${HOME}/.gst-plugin:${GST_PLUGIN_PATH}"
 mxl-gst-looping-filesrc -d /dev/shm/mxl-2 -i "${VIDEO_URI}" --video-id "${VIDEO_ID}" --audio-id "${AUDIO_ID}" 2>/dev/null
 # sleep 5
 # kill -9 $(pidof "mxl-gst-looping-filesrc")
 # echo -e "\ngst-looping-filesrc killed"