You have to rip out the Sonos stuff and get the music metadata from somewhere. If you're playing music from your phone on a bt speaker, that's going to be tricky. If you use a laptop, my guess is that would be fairly easy.

I have it running on a RPi with a display, so it also shows the album art on my desk. You might need to rip that out as well, can't remember if I made it really configurable.