hi I'm new to MD - I bought recently Sony MZ-N505 recorder and have some MD with music on them, but I would like to totally erase them. The problem is, that I can neither do it from the device itself (I get the TrPROT message) nor from the PC. I already tried to initialize the MD, but it failed The second problem is, that on one of the discs I have about 40min free, and I can't add any songs (I recorded one new blank MD). thanks for any help regards P.S. i can't even record a BLANK MD now heeeelp!!