Winamp error - unknown artists and song title error
 

For some reason in winamp pro app it display the track number in the song title and doesn't always show the artists name. It says I have 110 songs under unknown artist even though that's not true.

I fixed the problem with the track names. I just changed the settings of the file name format (right click on device and click preferences). I attached a screenshot for clarity. The unknown artists error happened because of bad id3 tags. according to mp3tag I have 117 song with bad id3 tags.