I know this isn't answering your question exactly, but Sony Vegas is super easy to make matrices of two sources. You just drop the files, align them (by clicking on one waveform and dragging, and the stretch (by pressing 'control' while clicking on the waveform, then dragging) one to match the other, then render and you're all set! Takes only like 10 minutes for an average show (I've done three so far). It did take me about half an hour to get familiar with the basic features of Vegas and the interface, but after that it's really easy.