The old MusicMatch had a great feature, you could group songs by
artist, an expand/collapse function. This was a handy feature, shrunk
my library listing from 3,500 rows to under 100, much faster browsing.
The new Yahoo Music Jukebox just lists every single song one line at
a time.

Is there a way to collapse/expand by artist either in the application
or is there a plug in?

Thanks.