Thanks for your effort! Here's some feedback:

I successfully played movies from my QNAP 459Pro NAS (running Twonky 6.0.34) to my Samsung D6510 Smart-TV (Firmware 1.0.18).

I noticed that Helium shows a progres-indicator (time played) but it's not possible to use it to jump to a certain position. (I can do so on the TV, so it's not a file/player problem). Do you plan to add this? Maybe also for volume control? It would be very convenient so one does not have to switch from the N9 to the TV-remote and back.

I found the procedure to start playing not intuitive. I had to read the manual to discover the long press (was expecting the > on the
renderer page to start playing). It would be nice to have a feedback on the successful long press (vibrate).