Here's a very cool little plugin called Lyrics
Plugin for Winamp or Windows Media Player that displays song lyrics when
you start playing a song ! You no longer have to go searching the
internet for the song lyrics ! Simply play your MP3 file and a few
magical seconds later all of the lyrics for that song show up
automatically !!! Once installed, for example in Windows Media Player
on my computer, choose a song from the libray and begin playing it.
Then click on the Now Playing button across the top and the lyrics
screen will show up. Of course, this program will not find all of the
lyrics for every song, but if you feel up to you can add the lyrics
yourself! But from my testing, any popular song or half-decent band's
songs were all found and they were correct.