Maybe I'm really dumb, but I cannot for the life of me work out how to play music from the catalog without inserting CDs. Both Play and Queue prompt to insert a CD. I would have thought the whole purpose of this sort of software is to make that unneccesary. On the whole I'm pretty impressed with the cataloguing side of the software, but I might be reluctant to part with my money for a piece of software with such inadequate help.