The amp is connected to the media centre via SPDIF. I am currently using the onboard sound as the soundblaster currently has major driver issues in Windows 7.

DVD's play in Media centre using Dolby decoding on the AMP just fine (Dolby digital shown on AMP). I also get down mixed (From HD soundtracks) DTS from Totalmedia theatre playing blu rays fine too. However I am struggling with Freeview|HD. 1 and 2 sound horrible with the amp set to auto as it defaults to Dolby surround and tries to matrix out the crap that TVNZ is sending out currently. I had a complaint from my wife last night that the news sounded like it was coming from under a pillow. I had to agree that it does sound bad.

TV3 does sound a heap better however when shows that have 5.1 are playing the amp is still saying that the source is Dolby surround not Dolby digital.

Any ideas on how to get the sound, sounding better via media centre? I know a good start would be for TVNZ to get with the game....