Unfortunately it is not just this disc that has the problem. Anything I record now shows as 29 cda files and all previous discs not finallised also. I still have all my original files on discs but they all show as cda.unless they were finalised, something I didnt always do . The problem is I have 2 PCs, my old clockwork one which is connected to the net and my new more powerful one (I think it has a bigger spring) in another part of the house which I use for Bryce etc. So, anything I d/l I burn to disc on multisession and transfer to the new machine. Its a poor mans network. Ive used this system for some time with no probs. But its reading cda,s in both machines in all drives. I think Im stuffed. Thanks for the help and advice and if anyone else knows the answer......