Hi: Just posting this for anyone who might be experiencing problems with a similar setup. I was able to make my USB Event EZbus (2-channel) work great with my Planet CCRMA setup. But only after setting the period size to 2048 at 48000. I was always able to record via the 2 channels, but other apps which depended on jack would crackle very badly. Setting this period size to 2048 did the trick. Ok, thanks for the help, gk