I'm not sure what new things are out, especially on leopard, but my experience with lyric fetching things wasn't the best, a lot of times it failed to get anything, so I went with a new route: Applescript.
Doug's applescripts for iTunes is what I use. I found a script to
Search Google for lyrics. When activated, it opens the web browser and searches google for the lyrics of the current song that is playing.
I then click on a link that I trust to have the proper lyrics, highlight the text on the page, copy -- then I run
This script which takes what I have copied in the clipboard -- and automatically pastes it to the lyrics section of the song.
The clipboard to multi-track script also serves a dual purpose. I use it automatically to append lyrics to single songs, but I can also select multiple tracks that are the same (live versions, covers, etc..), and have it paste the same lyrics to each file simultaneously.
It seems like a lot of work, but not if you have a program to setup hotkeys to run them. I use
keyboard Maestro to setup the following:
command+1 - Searches google for lyrics
F13 - Activates iTunes, selects the current playing track, and runs the script to paste lyrics to that file. The reason I have it select the current song is to stop from accidentally having another file selected aside from the one playing.
If I didn't have that safeguard, I could search lyrics for the track that's playing, and paste those lyrics to an entirely different track by accident. If I need to use the script for multiple tracks as it's designed for -- I just click the applescript menu in the iTunes task bar (right before the help menu) and select the script itself -- doing so runs just the script, and not the other actions that the hotkey runs before executing the script.