Hi all this is my first post. I was hoping someone could help me Retroarch 1.7.1 has working sound. When I uninstalled that version and installed retroarch 1.7.2 my sound is missing from every core and every game. The xmb menu has sound, and apps like youtube have sound and other PS3 games have sound just not retroarch 1.7.2. I tried the DEX and CEX version of the app. I tried fiddling with the audio options and still no sound 
could anyone help me? is my PS3 just messed up?
Updated to 1.7.3 and the problem seems fixed