@John
By all means. Go ahead and create a new folder just for the wav files and load as many of them as you like.
@Brigit
Keep in mind that the URC-9960 is designed for the US market, so it's quite possible that you will have a hard time finding a German TV that will work with it. So it's probably a good idea to ask your husband to check out JP1. It's really quite easy once you figure it out.
@Mr_E
Drop me an email at rob1 (at) rockabilly (dot) net, I'd like to chat.
Rob
http://www.hifi-remote.com