Hey Sky,
Before you do anything, save a copy of all your playlists to a seperate folder. This way if any changes happen that you dont like, you can always go back to square one.
3.321 is 3.40 (3.40 is a version of 3.321a) which is located here:
C:\Program files\Micro Techologies Unlimited\Hoster34.exe
If your playlists show HDMP3G files (converted HDZIP's), you should be in the clear. Your playlist should run in 3.321 and 3.40.
I hope this helps.
Jim
