Google Desktop Search and finding MP3 files

It seems like Google Desktop Search won’t index or find mp3 files. Is there a way to change this? There’s no such option in settings…

Ah, OK. I can’t search for MP3 files tags like name of the group/artist or album, but searching for titles - the actual name of the file - works.

There are programs that will automatically rename your MP3s to include the tags in the filename. I know iTunes will do it, for example