[Feature] Windows 11 SMTC (System Media Transport Controls) integration

[chirag127]

Feature Request: Windows 11 SMTC (System Media Transport Controls) Integration

Problem

Musify on Windows 11 does not register itself with the System Media Transport Controls (SMTC) — the Windows API that powers:

• The Win + K cast/audio overlay with playback controls
• The lock screen media card (album art, track title, play/pause/next)
• Taskbar thumbnail toolbar media buttons
• Hardware keyboard media keys (Fn+Play, Fn+Next)
• Third-party overlays like Music Presence, MediaInfo, and Discord's automatic game/media detection

Without SMTC, Musify on Windows feels unintegrated with the OS: hardware keys do nothing, the lock screen shows no media info, and Windows 11's built-in media experience is completely bypassed.

Proposed Solution

Implement Windows.Media.SystemMediaTransportControls so Musify:

1. Reports current track metadata (title, artist, album, thumbnail) to SMTC
2. Responds to SMTC playback commands (play, pause, next, previous, seek)
3. Updates playback position in real time for the progress bar on the lock screen overlay

For Flutter on Windows, the smtc_windows pub.dev package (MIT license) provides this integration with minimal code. Alternatively, a direct WinRT FFI call to the COM interface works.

Why it matters

Musify is cross-platform Flutter app targeting Windows among other platforms. Every other major Windows media player (Spotify, VLC, Groove, Windows Media Player) integrates with SMTC. The absence makes Musify a second-class citizen on Windows 11.

References

• smtc_windows Flutter package: https://pub.dev/packages/smtc_windows
• Windows SMTC docs: https://learn.microsoft.com/en-us/uwp/api/windows.media.systemmediatransportcontrols
• Similar gap filed at SimpMusic: Desktop App Windows SMTC support maxrave-dev/SimpMusic#1655

Platform

Windows 11.

[Unfinished632]

I don't know much about the codebase but this sounds like a Musify-for-Windows issue.
It's said in the FAQ that Musify is only available for Android due resources and time. As far as I know Musify for Windows is an unofficial fork of this project. You should move this issue there instead.