travis-tee

I recently got a mindisc for free and bought all necessary cords (USB, RCA etc.) and software. I'm having no problem playing and burning music with my PC but when I try to record from my mixer (DJ'ing) the minidsic will randomly turn itself off and not save anything I have recorded. I have done all the troubleshooting I can think of (battery etc) but can't find a valid explanation. Any help would be muchly apprecaited! Thankyou.