Thanks for the replies, Yeah, good question, why would i bother a "downgrade" to mp3 from the superior sound quality of Atrac... File handling goes over sound quality in my case. I guess, i prefer the easy handling of mp3 files over the complicated drm thing with SonicStage. My case: i have two computers (laptop and stand-alone pc). On my pc i ripped a cd to the pc and transferred onto hd-md. There is no way i can download it again to my laptop because of drm. But sonys solution to that problem is that i can listen to my hd-md over usb. I think this is a bad solution and it makes handling of files between more computers a pain (well impossible). My guess is that (but i dont know) mp3 files can be copied to and from hd-md (in the rh910 unit) without drm (tell me if im wrong). And thats what i like - sound quality is second priority. If i had the atrac file handling without drm, or some other kind of drm between two computers (like a registred user account with a certificate what-ever) i would say that i have not wasted my money on the nh900. I dont know if i made myself clear. Cheers Per