Like Lynne I get a lot of CDs from hopeful artists after bookings. Too many won't play on my car CD or at home. A pity because they might be fantastic but if I can't hear the demo I can't risk booking them.
Never thought of trying them on the PC, maybe I'll give some of them another go.

I can tolerate demos that are cheaply produced but when I pay good money for a CD and it proves unplayable I really do feel that I've been ripped off.