along this vein -- someone mentioned they were using their stereo amp. you
really should find someone with good a/d equipment like a gina or
something, but if you have to use the line in on a consumer card, make sure
you run a line-level input into the line-in, as opposed to using the
headphone out on a stereo amp or something or using mic in. you'll have a
less distored signal which will make for better normalization, and also
less hiss (although a -40 or -30db noise floor is hardly noiseless ;p)
-sean