mm2

I'm having trouble importing mini disc content from the Sony CMT-M333NT Net MD stereo into a computer. I'm using the stereo's PC USB cable; the computer sends audio out to the stereo fine; however the computer audio program is NOT recognising the stereo. Ive tried Sonic stage, Audacity but they will not recognise the stereo to import files. Does anyone have any suggestions? I'm using a Windows 7 - 67 bit pc. Thanks in advance.