Audio to video synchronisation for Australian Digital TV

ABC Radio Hobart is interviewing me 7:10am tomorrow about problems with Audio to video synchronisation for Australian Digital TV. I am not expert on digital TV, but must have done okay when interviewed by ABC Radio WA South West on the switch over to digital TV last month.

As I understand it, the problem is most likely in the viewer's equipment, not the TV studio or broadcast equipment. I have the problem myself using a Widescreen LCD for TV. The audio takes a different path through my home theatre system, from the video which goes from the set top box to the display. Delays with processing the video result in it being out of sync with the audio. Some equipment allows for adjusting the audio to match the image, but my cheap home theatre doesn't (nor does the TiVo set top box).