Wireless sync metadata not working properly
 

It seems like the wireless sync can't find the correct metadata for songs on my android.
Most of my songs on my computer that exists on my android tries to be synced to my android.
but with new songs that is synced from my computer works great.
Is this a failure in comparing the media between the devices?

http://dl.dropbox.com/u/3375306/winamp-metadata.JPG
of all these 440 songs only 16 of them needed to be synced to my android and all the 346 songs my android exists on my computer