I think I like my orginal sugestion better. since jemplode already includes everything but the kitchen sink (logo editor, animation editor, hijack updaters) why not teach it to add lrc files to mp3s? If you taught it to create lrc files, you could have all the functionality of seperate files for those who wanted them.

Worst case scenario, it's got to download the file, add the tag and reupload. So it might take a while, but things would be right. I have a hard enough time keeping my mp3s organized, and I don't think there's any hope of mp3 Tag Studio supporting lrc files anytime soon.

Matthew