BerryTunes has an update available - version 2.5.7.
It's available from:
BerryTunes 2.5
You can also just use the "Update" option in BerryTunes if you already have it installed.
So far I've found that the update makes connections even more robust under OS 4.5 (haven't tried in 4.3, but assume same benefit there). Quick loading and smooth playing.
Very nice...