(I did the search thingy and couldn't find an answer to my query, so here we go.) I am trying to hear movies on HBO in Dolby 5.1 audio, but the indicator on my receiver says only "Linear PCM" and "Dolby Pro Logic II." - I posted my problem on the dvdtalk forums and someone there said the Motorola DCT2224 *is* capable of outputting 5.1 sound. Someone on the hometheaterforum said the 2000 series is not. When I emailed my cable company, they didn't indicate that it's not. This is the model they've always given out to customers. I've got three of them in my home. I can't find any more information about the box online. - I have the digital cable box (Motorola DCT2224) connected to my DVD player/receiver (Toshiba SD43HT) correctly. I connected a second DVD player to my receiver using the same setup (DVD player->Coaxial->converter->Optical->DVD player/receiver) and it recognized and decoded Dolby Digital and DTS from a DVD. - For my cable box settings, I set Dolby to "On," Compression to "Light" and Stereo Output to "Matrix Stereo." There are no additional audio settings for the box. I am going to try unplugging the box and plugging it back in after a few hours to see if it resets itself where there are more options. - My cable company says: "If we receive the signal in Dolby 5.1, it is passed through. The rest of the settings you can adjust to which sounds best to you." And they were of no more help. I emailed them again about the possibility of the box "downmixing" to 2.0 and am waiting to hear back. - I am certain that the programs I am watching are 5.1, not 2.0. HBO says so right before a program starts, and the on screen TV Guide info also indicates it's 5.1. Any help is appreciated. PS: Should I really be concerned? Will a movie or TV series broadcast over HBO sound much better in Dolby 5.1 than PCM stereo decoded with Pro Logic II? Is there a noticeable difference, in other words.