Just use iLyrics. It's on Google code and the address is http://code.google.com/p/ilyrics/.
I think this has been answered fully now, so could an admin please move this to finished.

I beg to differ.  Your suggestion appears to be a plugin for iTunes and not everybody uses iTunes.  Since there doesn't appear to be a working solution, I may develop a stand-alone application that leverages the lyrics code from Trout.