Howdy, What does the often talked about 'mac-compatibility' really mean here ? I mean I have the RH-910 and it will not allow me to copy audio files from it to a Mac. Is this because the mac-compatible players convert the files from atrac to wav on the player before copying and mine does not ? As I understand it there is no atrac conversion software for the mac. If there were I don't think this would be a problem. Anyway the software let's me edit the track/folder names and lets delete stuff from the disk and allows copying of mp3 to the disk. This on a iMac G5. Regards, Jari