I'm looking for an app for osx that will run in the background, going through my rather cumbersome library and add lyrics to the metatags so they will show up on my ipod touch. I use GimmeSomeTune! Which works reasonalbly well but only fetches lyrics when the song is played. I've also tried Corripio which purportedly does exactly this, but is pretty worthless as it only successfully matches lyrics with about 1 in a hundred songs in my library. Anyone know of any other alternatives?