last mac sync doesn't:
1) update itunes existing playlists;
2) it does update new music in itunes but it doesn't fit in the right winamp playlist: if you add new music in an existing playlist then you will find the new music in the winamp for mac BUT not in the right playlist;
3) doesn't sync the playlists: if you remove the playlists it's still there in winamp music (a popup should advise the user;
it works in the overall though. I wait these 3 fixes.