Just got the S3 and love it!
I tried TiVoDecodeManager and some (apparently the non-protected) shows come up. At first it would download an episode, but couldn't be opened by QuickTime - only VLC Player, which doesn't do any good. After awhile, it would go to 0:06 of the download and keep crapping out. Episodes lack the details on the right sidebar. Tried it on another clean account and it's the same.
I tried using https:IPaddress, then "tivo" for user and the Media Access key for password. I can see a good list of the recordings, but when I download, I get a .TiVo file of 7+ GB, which can't be played by anything, including VLC, which keeps returning different error messages. Tried changing the extension to mp4 to no avail.
So, to make transfers work on a Mac, am I stuck with Toast 8? If so, will it produce an mpeg file I can edit?