AUX is normally an input connector. Output is usually market as LINE OUT, REC OUT or similar.
If the device does not have line level output connectors you could try to use the headphones socket.
*smacks forehead hard*
Alex, you put me to shame. Of course AUX is usually an output.
I was a keen student of electronics as a teenager, and should have remembered that.
Okay, having caught up, I can now record. But there's an odd and annoying little detail.
I play a cassette, connect PHONES to the input jack on the PC. It records fine, in stereo, on Windows Sound Recorder (i.e. Entertainment>Sound Recorder) and it seems to record fine using MJ. I burn the resulting files onto a CD. The CD plays fine, in stereo, on my PC. But the CD only plays out of *one* speaker on my CD/tape player - the same machine on which I played the tape to record from.
On the theory that something went wrong with the burn, I burnt another copy of the CD, but same result.
Is there a sensible explanation for this ?