WPinit

Hello I have VRS Recording System and have an issue with trying to get it to record 4 channels. I have bought http://www.altoedge.com/soundcards/index.html#AUDSCM4 4 In/4 Out Audio Card with MIDI and Digital I/O. Just for testing I have two VCR’s hook up and running different video types. When I plug in the audio to one jack it picks up on one channel, when I put it in to another jack it picks up on all the channels. But I can only pick up one audio source at one time. Anybody have any ideas? Thanks, WPinit