my cds work on every set of cdjs ive ever used over the last couple of years, over the weekend i had a set on internet radio my cds would not work! yet everyone elses worked fine. a lot of mine were brand new and burnt that day. i always use windows media to burn and have never had any problems anywhere else. the cdjs were pioneers mk2 black ones. i and the others r baffled as to y they wont work in the end 2 discs worked but others didnt . if anyone can hepl please let me know as this is odd!