Hi, I'm stumped about a problem with my SB64's line in jack. It doesn't seem to work. I discovered this when I downloaded a tuning program, plugged a mic into the line in jack of the SB64, and got no signal at all in the program. I tried using Sound Recorder, and the same thing happened -- no matter what I did, it didn't record anything. I switched out my SB64 with my old SB32, and everything worked fine! I've downloaded the latest drivers, but they didn't help, and the volume settings are all correct. Any ideas? Thanks!