Hey Len. If you're interested in upgrading to a Philips Pronto Professional TSU9600 remote and Philips RFX9600 Serial Extender let me know. I have a number of spare remotes and extenders. I could part with one of each. Well, for a price. I could hook you up with a serial cable as well and transition your TSU7500 configuration file over for use with the TSU9600. In the process I could integrate my activity for controlling the Sony BDP-CX7000ES which has a "Direct Disc Selection" option built-in. You just select the "Direct Disc Selection" option, enter the "Slot Number" you want and hit "Enter". The remote then sends a RS-232 command to the changer telling it to play the disc that resides in the changer slot you entered. It's that simple. :-P