iPad radio control

I've spent a lot of time trying to control the K3 from the iPad, and I'm so close I can taste it, but never have succeeded. I'm using an iPad App called Jump, that streams the audio back to the iPad, as well as controlling the remote computer.
It works very well, except I can't get it to stream audio from the computer's sound card output. I know I'm missing a small setting somewhere, but I've been through every menu I can think of, and I haven't found it.
I can stream other audio from the computer back to the iPad. I can hear the sounds, play a Youtube video, etc, and hear it on iPad. But I can't get the audio out from the sound card.
I did have it running the other night where I controlled the radio with the iPad, and used Skype to send audio back to my iPhone, but then I'm using two devices. If the iPad would multi-task, I'd be there.
I'm running Vista on my comptuer, by the way. Anyone have any ideas, I'd be glad to hear them. For the moment, I'm ready to admit failure on this one.