Smart shuffling to avoid close artist/album proximity?

[silvae]

HI there,

I'm looking for a Winamp plugin that will shuffle the playlist "intelligently," so that it's not pure random mish-mash. Currently, the shuffle button will randomize the list, which often puts tracks from the same artist or album next to each other or in close proximity. A smart shuffle mode would be PERFECT for creating playlists that will be saved to a radio broadcast where you cannot play pure random songs (i.e. you need to play track intros, jingles, adverts, etc at specific points in the playlist).

If such a thing exists, PLEASE direct me to it! I've searched in vain for this. Thanks!