I attached this to my Sony STR-DG910 yeasterday.... In a nut shell it ok.. It does allow you to hear your walkman (mine is NWZ-A818, this is very good in it's own right) through your AV receiver. Very dissapointed it doesn't have any visual interface with the receiver, and it can't be controlled through the receivers remote. This would be fine except for the fact that the I-pod adapter can!!..........Very little benefit for buying a sony walkman.
The volume levels are way too low aswell and it's just one of those products that leaves you a little cold... a USB interface would have been ideal, no need for this at all.
Only plus is that it charges your walkman...mmmmm?
Not too chuffed