Well, the experiment didn't yield satisfactory results.
My computer (Amarda M700 notebook) doesn't have Line-in. So I have to use the Mic-in to couple with the Line-out of the cassette deck. I don't know if it's because the different impedance between Line-out and Mic-in, the recordings contains a metalic, sort of echoing noise that I can't tolerate. I tried Wave, it didn't help.
I don't have hardware to make the Line-out compatible with the Mic-in at this time. Can anyone who's an audio/HiFi export provide me with a simple solution?
Thanks.