Doug's AppleScripts are great. There are a few more scripts available at [url=http://www.manythings.org/mac/]www.manythings.org/mac[/url] that are not available at Doug's AppleScripts.
Put Apple's speech synthesiser voice as the DJ on your iPod (or iTunes).
Make evenly-shuffled playlists: Alternate between bands, alternate between genres, etc.
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