[PROBLEM] No Dolby Digital (AC3) audio?

[andoni]

(11th Dec, 2013 06:34 PM)rikardo1979 Wrote:  does your TV decode AC3 from HDMI and out it to Coax ? just leave XBMC Audio out on 5.1 and external decoders enabled. Than see if you have sound from your TV speakers, it should downmix and play from TV speakers
edit: if this does work and you still have no sound from your amp connected over Coax than its more likely that your TV somehow either does not support this so its not able to out sound from HDMI to Coax or the decoding doesnt work for some reason

The TV seems to be able to decode AC3 and play it through its speakers. It has the option of sending the downmixed audio thru coax or leave it as passthrough, which is my current setting. The receiver amp recognizes the stream as Dolby Digital and switches to that mode. So I'm guessing the TV is passing through the 5.1 audio correctly. But there is something about the bitstream that is preventing my receiver from decoding it, so no sound comes out or it's garbled. Anyone know if there are any options in xbmc to modify the passed through bitstream, like bitrate, ...etc.??

This might be a general problem with certain old brands of receivers since I've found many people with similar problems: http://forum.xbmc.org/showthread.php?tid=171703

Am I missing something? Or my only option is to buy a new receiver, for me that goes against the logic of buying a low-cost RPi