The -a option solved the scanning issue ! Thanks a lot ... Now I have this weird problem that occurs. The track don't play and the Sonica 'browse/skips' throught every song in the playlist. I noticed that the track time is like 00:00/null ...
This sounds like the audio device is either locked up or in use by another application. Only one application can open the audio device at a time. Do you get any messages in the lower left corner (on the status bar)? Audio device errors should get displayed there.
Could this be due to synchronization problems with my computer or maybe the fact that I am using windows media connect + mounted drive or is it something else that I am doing wrong ?
Probably not. However, if you recently used the built-in music player application to play something off windows media connect, then it might still have the audio device open.
There's some special sequence to shutting down the built-in player so that it really does exit and doesn't just run in the background. Might be easier to just try rebooting the PB (hold down the power buton for 10 seconds or so). That will make sure the audio device is ok and ready to be used.