Music Tab doesn't populate, RetroArch on Playstation Classic

I understand the Music Tab doesn’t populate from directory / file scanning, but is expected to after playing music? After playing MP3s with the FFMPEG core, the tab remains empty. “No music”. Instead, the History playlist updates. Fortunately the option to ‘Add to Mixer & Play’ are available here (but why not directly through File Manager?) so I can listen to tunes (provided I already have them in history, else I lose my currently open core) while doing dev stuff. Maybe I’ll make an HTML5 Playlist editor (Drag & Drop) and bypass this functionality in the meantime. Retroboot 1.1 / Retroarch 1.8.5 on Playstation Classic