[jitter] AV Mixing from QT Movies, Recording with jit.vcr

Using the simple tutorial 08jSimpleMixing.pat I have been able to create a video mixer that does exactly what I want it to, multiple mixers in fact. I was able to use jit.vcr to record the video. What I have been unable to do is have the sound mix. I was able to figure out soc/spigot~/dac to get the audio into jit.vcr but no matter what I do it records ALL the audio from ALL movies. I can't find any way to create a simple audio mixer that will mix the spigot~ input from two playing quicktime with a slider (or anything else). 

Basically, I want two QT videos playing. I want to drag one slider and both audio and video will shift playing from A to B. This seems so simple but I promise I've tried to RTFM and search all the tutorials and I am just not seeing it. I am sure I can expand beyond this simple behavior if I can just understand how to get this basic project set up. 

Any help, even telling me where to go look in the tutorials, would be great. I've been at this on and off for weeks. Had great luck with jitter and video but NONE with getting this audio thing working.

Thanks!