OK, so I'm listening to my "All Artists" playlist, with some 4000 tunes in it. I come across a Pink Floyd song, let's say "Keep Talking" on "Division Bell", so in my setup, it would be in:

By Artist
. Pink Floyd
. . Division Bell
. . . ...
. . . Keep Talking
. . . ...

Now, ordinarily, I'm in a "random mood" and the next song might be Sting, Slayer, or the 1812 Overture, but if suddenly I get "in the mood for Floyd", it'd be nice to be able to go into a "what playlists" mode, where I can basically jump to OTHER playlists which contain this file (in this case, it would list "By Artist", "Pink Floyd", and "Division Bell"), and then select to play THAT playlist instead.

By the same time maybe it also appears in a "By Genre","Rock","Classic Rock" set of playlists, and those would appear in the list of playlists as well.

Thoughts?

D