Just wanted to post that Markspace Missing Sync does work- (after several tries) to sync music (and podcasts if desired) from iTunes playlists to a Blackberry 8820 w/ 4GB Micro SD card !
I was receiving the "card must be mounted" error message, then
I chose yes to mass storage mode, and had iTunes open at the time, and the playlist I was copying highlighted - and it worked. Running OS X 10.4 on a MacBook.
Now I won't miss the iPhone w/Podcast sync so much cause I can hear this wonderful 8820 just fine!