I think* you need to provide a lot more info, such as the component(s) the signal is running thru (receiver?), and the settings. Then there is the issue of firmware updates and/or availability.
If by codecs, you mean things like AVC/MPEG4, MPEG2, etc, I've never come this issue as far as playback.
The first thing I'd look at would be receiver/processor settings. Next would be PS3 settings. If the audio unit is Onkyo/Integra, you might need to put HDMI audio to "off" or something, and yes that's rather counterintuitive. See, the HDMI audio as "on" means that the audio is instead being passed to the Sanyo projector, which I rather doubt is reproducing your audio. Just an example. Good luck.
edit: I might repost somewhere else for more viewership, perhaps the general av discussions subforum.