Very impressive

For any of you who ever owned a Rio Karma, think of this as RioDJ on steroids.
Ive bought virtually every playlist manager available, but this is easily the most dynamic and fun to use. Allows you to run live queries against your music library without having to refresh on iTunes.
Now that theyve added the ability to save multiple queries, I give it a 5.
I highly recommend if youre looking for an app that will give you fresh mixes and a fun interface on the fly.

Puckhead0806 about SmartPlaylist