I ran across two weird bluray title....ghost rider and stomp the yard. If you go into audio options, you only have two options, TrueHD or 5.1 PCM (uncompressed). Usually there is a 5.1 Dolby Digital option. It defaults to TrueHD sound. The problem with both of these formats is that it only outputs 2.1 over SPDIF. The only work around I know besides going to analog sound is to choose 5.1 pcm (uncompressed) sound. While the movie is playing, go to pdvd config choose audio and then s/pdif mixing and select mixing - dts. Then you'll get 5.1 sound however 1) it does not sound as good because I think of the mixing and 2) its a pain in the a#%. I like to be able to do this with my PC remote. Also, if you leave the setting on PDVD as s/pdif mixing, and you launch another movie, it goes back to 2 speakers and not spdif. You have to go back to pdvd, switch to spdif. The s/pdif mixing only works with these two particular bluray movies. Weird and annoying.