How do the MP3 tags relate to mt-daapd and the SoundBridge? Do you have to transform the tags only for the streaming MP3 but leave the tags on the MP3 in the filesystem alone? Or do you give the artist/album/etc seperately to the Soundbridge and it doesn’t read the tags?
What would be perfect for me is to transform all MP3s in the various folder (I think you already have that implemented for the compilations flag), and use a regexp to transform the current title into a new artist and title. But not modify the tags in the MP3 stored in the filesystem.
Andy