I don't know about you, but I like to keep track of the tunes I buy from the Apple Music store. To do this, I create a new smart playlist. Select File -> New Smart Playlist, and under "Match the following condition," choose "Kind" "contains" "Protected AAC Audio File."
I name it iCrack in honor of Shawn King's Internet Radio show "Your Mac Life"; that's what he calls the iTunes Music Store!
[robg adds: Ironically, I did this same thing just the other day. The iTunes Music Store creates a "Purchased Music" playlist automatically, but I managed to highlight it and hit delete (whoops). With the new smart playlist (make sure you check Live Updating to have it updated each time you purchase a new song), I always know exacly how much money my iCrack habit is costing me -- and more importantly, it makes it quite easy to create sub-playlists for burning the purchased tunes to a CD.]
Mac OS X Hints
http://hints.macworld.com/article.php?story=20030608114449204