Jim, I gave that a try - same results as before.
Here are some things that I found out while trying some things out...
MC seems to hang on "retrieving file info" if I connect the player to the PC before starting MC. When this happens CPU utilization shoots to near 100% and it seems to hang there.
When Synching with MC as I mentioned I get duplicate plays lists on the sleek - one set for each synch.
If you browse the Sleek using Creatives Media Explorer it looks like MC puts all the music files in a folder with no name - then by artist, ablum etc... However, there are a few songs - that appear in the root of that folder. Playlist don't actually appear in CME. If you browse the Sleek in CME after synching with WMP you see all the files listed under the music folder (must be a creative created dir.) where they are listed by Artist\Ablum\song.mp3. There are no files in the root after a WMP synch.
Not sure if this matters but when I connected the Sleek and opened MC I could see all the folders that are there by default (the ones you see in CME). After the synch I could no longer see those folders. Sorry - they seem to be back again. But now one of the folders is called Creative Sleek and in that it is a repeat of the Sleek device and all it's files and so on... like a mirror image of the parent directory. This only shows up in MC.