At least with regard to XBox support. Thanks to a hint on our IRC channel (#gupnp on GimpNet) we now have video thumbnail support for the XBox 360 in Rygel master.
… for others but I wrote myself a small “cp” replacement that tries to imitate the behavior of P2P clients by copying a file block-wise randomly with a small delay between each write. I use this to
trigger bugs in test the media-export back-end of Rygel.
The repository is at https://github.com/phako/random-copy