I'm considering buying a Blu-Ray player, as my ailing DVD player is, well, ailing now. So I'm initially looking at models such as the Panasonic DMP-BDT180 or Sony BDP-S1700/S3700. Round the back, they have a single HDMI output (v1.4 or later, which I presume is compatible with my v1.3 Panasonic TX-32LZD85 TV?), and a single coaxial for audio. On the rear panel of my solid Sony STR-DB940 [link to manual] are a huge crop of I/O connections including optical in, coaxial in, and discrete 5.1 inputs. It pre-dates HDMI and is hooked up to my 5.1 speakers. The Blu-Ray players mention formats such as Dolby Digital/TrueHD, Dolby Digital Plus, DTS-HD Master Audio, etc. My receiver just decodes vanilla Dolby Digital and DTS, year-2000 stylie. So what will be the outcome of hooking the coaxial-out of the Blu-Ray to my amplifier and playing a disc? Perfectly serviceable 5.1 surround sound? White noise? Digital squelching? Silence? Downmix to stereo, only playing from the front L+R speakers connected to the amp? Are there player options to send old-skool Dolby Digital or DTS to the amp? Are the formats backwards compatible in any way? Can some players dumb down the digital signal a little to the older Dolby Digital/DTS? If so which players do this? I have a vast wealth of DVDs that I'd like to continue to enjoy in 5.1. No broadcast / catch-up TV planned whatsoever. If a newer player's only going to be able to send a stereo signal to my amp, that's no good for my immersive movie enjoyment. In which case, my options seem to be: Buy a Blu-Ray player with discrete 5.1 RCA outs [assuming the player then does the heavy lifting and sends discrete decoded audio channels to each RCA for the amp to simply route to the correct speakers]. If so, what are my best options? Buy a player with speaker terminals into which I can plug my existing 5.1 speakers [do such machines even exist?] Buy a complete system with speakers, effectively ditching my current amp and speaker setup. Stick with the current DVD player/amp combo until one or both break, and worry about it then. Something else...? I'd be incredibly grateful to anyone who has deeper knowledge than I do on this subject. Many thanks in advance.