Works fine with my NW-E507. I cannnot thank you enough and look forward to the further development of this program. I am of course willing to pay for the use of it..so whenever you are ready... Sony is particularly aggressive in their stance regarding DRM. I would advise anyone who wishes to use this system to forgo any kneejerk firmware updates as Sony may choose to alter their encryption scheme in an attempt to mess with you. I am an early adopter of most technical toys and have been using "MP3" hardware and software for years. While I love the hardware that Sony puts out, their software (SonicStage) is truly an insensitive intrusion upon my time. Because of their software I would never encourage anyone to use their hardware, even though I myself am willing to put up with it for the sake of the beautiful form factor of the NW-E507. I listen to audiobooks that I rip myself at relatively low density so I only need to deal with sonic stage about once a month.... and now perhaps never again. God bless you all. May SonicStage burn. MP