A buddy of mine recorded something for me from the TV on a couple of DVD-RW discs (Sony 4.76 120min). I've tried to copy it to other blank media on my laptop with no sucess. I've tried DVD-R initially and then DVD-RW (both 4.76 120min media). Was using Sonic software on a Dell laptop.Does the copy disc have to absolutely match the original? (in small writing on the original DVD-RW disc it says 'extended 240min').