I'm trying to find a music player app which saves metadata - specifically star ratings - to the files themselves rather than to a database.

This way I am hoping that I can sync the files (and the embedded ratings) to my computer so that I can build star-based playlists in any program on my PC.*

I can try each of them in turn but thought it was worth asking in case anyone knows of any? The app would need to be set up to make it easy to edit ratings on a song - ideally from the lock screen (like rocket player does).

Thanks very much.

* p.s. I know you can get apps which sync to the PC but I use Linux and there's not much out there for this OS.