[sadu]

"What I was looking to do is transfer the concerts I have recorded to MD over to my computer via USB.

Thus the conversion would look something like this:

MD -> USB -> PC

I've heard that this is impossible"

Then it would look like
PC concert -> USB - MiniDisc

Type in the name of the adapter into google it give you lots of information regarding what it can and can't do...from what I remeber however it DOES EXACTLY what you want. Takes a digital file from the computer and puts it on digital media via optical cable. Not as fast as a true digital swap but pretty dam good.

good luck - ez