New Features
- Background music playlists: mix tracks from your RomM server, local files, and auto-synced folders, with reordering and per-track toggles in the new Theme > Music settings
- Server music browser: explore game soundtracks hosted on RomM (grouped by game, with streaming previews) and add them as background music or UI sound effects
- Custom UI sounds: assign RomM sound clips or local audio files to any interface sound, with sample and reset-to-default controls on the Sounds screen
- Soundtracks included in multifile ROM downloads are organized into the public Music folder (Music/RomM/Platform/Game) instead of the game folder
- Game & Watch and Amiga now sync and launch via RetroArch (requested in #280)
Improvements
- Hitting the edge of a list now gives a single subtle buzz; softer default toggle sound
Bug Fixes
- Fixed Amiga Kickstart checksum validation and multi-disk playlist handling