guys, I found out a while ago a feature in WINAMP... if you have a song (full song) and you don't know what it is called or who's the artist (album/style/year of release etc...) in one simple click you can gather all the information you need.
check the images below for more info:
right click on the song and click on view file info
click on Auto-tag
and wait for 10 seconds maximum (P.S: you should be online)
enjoy