I'm working on a complete setup guide to use an AppleTV with an OSD. The OSD will use the AppleTV hd as storage (I will enable samba on the AppleTV). With this setup, the AppleTV will serve as a wireless bridge for the OSD too. I will listen recorded movies with Saphire. The next step will be to share recorded content to my second AppleTV (mount the drive, or rsync stuff during the night). For now, my setup work, but few things are not automated when I reboot the AppleTV. (I must unplug the ethernet cable for few seconds, and replug it). More info soon!