Ed:

Providing you know the song well enough, you can do this:
- open the MIDI file in PTPA
- Google the song. (I used) - cruisin "smokey robinson" lyrics
- open any of the sites that have the lyrics and then highlight them and Ctrl+C to copy to clipboard
- in PTPA open the Comments window, place the cursor there and Ctrl+V to paste the lyrics
- size the window to suit

This of course will only work if you know how the song goes and just need a reminde of the words
as the words won't "highlight" as the song is playing like they do in a karaoke file.

Good luck!
LLOYD S