First post in ages but thought that I'd post about Ipeng.  Its a neat (and free!)app for the slimcentre 7 (newest version of slim software) that lets the user browse using an ipod touch or iphone.  Go over to www.slimdevices.com and do a search or go to www.penguinlovesmusic.de for more details.  Allows for things like browsing by album art, start album playing by touching album cover and a few more bits and pieces.