BiPolarSounds

Hello everyone. I wanted to post in the forum, because I always record live and in would be more regarding in here. My model is: mz-nf710 Well, I wantyed to know (I doubt I can) cahnge the ATRAC to mp3 to record. Correct? My programs on my computer wont let me transfer anything anywhere. Everytime I do, my computer sends me an error message and automatically shuts off the program. It use to be perfect befor. I don't know what it is now. I tried to uninstall and install again but it's doing the same thing now. And the line in I use on the back of my computer (I guess now doesn't accept the dubbing cable) to convert and track to CD. I hooked up the cable from my radio to MD to make sure the cables working I can hear the radio (via MD) fine. AGGHHH!! Can anyone help?