(I even tested winamp now)

Yeah, but Winamp will play ANYTHING! I noticed that a file would simply NOT play on MusicMatch but MusicMatch would allow me to edit the id3 tag.... But Winamp WOULD play the song... ends up, the file was an mp3 with a .wav file extension. Simply renaming the file (a sound effect I downloaded in this case) took care of it. But I found it funny that Winamp will play just about anything. In early versions of Winamp, you could even drag .txt files and hear what they sounded like! (kinda neat!)