.kar files are not compatible with the PSR-640 lyric display. There is a utility call kar2mid.exe that makes the necessary changes, but I have not been satisfied with the results. If you are willing to pay for files with lyrics, check out Tune 1000. Yes, in theory anyway, you can add lyrics in your computer-based sequencer. I have done it in Cakewalk. But again, it is not as straightforward as it should be.
[This message has been edited by Clif Anderson (edited 10-07-2000).]