Not sure how many forum members have this box but for those who do and were planning to view the DVB-T broadcasts on them, so far you can't.  THis is an update from the Syabas team who support the PCH

PH] To be more specific, the audio codec needed is HE-AAC LATM. However, this codec didn't supported in Sigma library and means that Syabas team need to do the porting. It is possible but may takes a while, especially Syabas engineering team currently already fully loaded.

Make you wonder why Freeview chose this wierd audio codec - perhaps a deal with Zinwell or Hills to protect their marketshare in STB's or stop us from importing our own from China.  People more technical than I may tell me there is a technical reason for it.

I can understand some sort of MPEG4 format for video but AC-3 would have been fine for audio.