Hello, I bought my Sony MZ NF-810 in spring 2003. Exactly now, when the warranty is over, the player is going crazy. I can transfer files from Sonic Stage to the Player via USB. But if I listen to the songs, they sound really strange, like underwater. I have this problem since two weeks. Old MDs are played very well. When I record through line in or mic, everything is ok too. I changed the minidisc, reinstalled all the drivers and sonic stage (3.1), tried different bitrated and songs but nothing happened. I've also changed recording options (LP2 and LP4, as well as SP-mode) but it's all the same. The earphones are ok, the underwatersound remains, if I connect the player with my stereo. And as I told you, old recording are played perfectly. I asked Sony support, but they told me to go to one of those repair shops. I don't have the money for that... My PC is in a good condition. USB works fine with digicam and harddisk. I use WinXP prof. with all updates. Yes, I've scanned for viruses - but nothing was found. I don't want to record everything with line in, I bought the player because of the NetMD feature. Do you have any idea how to solve the problem? Thanks.