So I need to start conducting and recording interviews using Garage Band, Audacity, or some other preferably free software. I just assumed that I could go buy a couple of USB microphones, plug them in, and record in different tracks. I tried just that, and then learned that it's apparently impossible. Is that right? From what I gather, I need to have 2 xlr microphones and plug them into some sort of audio interface or mixer, and then plug that into my computer. Is that right? I'm not sure what I should do, because I bought my two microphones online and can no longer return one of them (a Snowball Blue). I'm on a really tight budget and don't want to spend hundreds of dollars on it. I suppose I could record from both microphones on one track, but that would make editing difficult. Any suggestions would be much appreciated. Thanks!