When I play a CD on my Denon 1930, almost every time it freezes in the middle of the last song on one particular SACD. I can switch to another track after it stops but it won't play that one, and once I did nothing for about 5-10 minutes and it just started up where it left off. And it's a new SACD without a mark on it. Some other regular CD's have had brief 1 or 2 second blips but only rarely, and another CD or SACD (cant remember) also stops on the last song. What's the deal?