One a special Millennium disc from Sunfly and the other a SoundChoice disc from their "spotlight" series. (SC 8734). These play on the stand alone karaoke machine but the disc does not appear in the sidebar in kJams. I have to physically switch off the external drive to eject the disc.
Now I am not complaining as two discs out of hundreds is no great loss. I am curious though. What could be problem possibly be?

CC