Here's a detailed description of what happens:
I travel to the Black emporium, there is backround sound and you can hear the antiquarian takling, but he has not loaded well, the model looks low poly and with no textures, also there are no effect sound when i press L3, or when i open a menu, or go into the item stores in the emporium, after i leave, where ever it is i go to, there is no longer any sound at all, no effects, no music, not even in loading screens, when a approach an npc or party member to speak to them, dialogues don't pop up at all not even the subtitles, or they lag greatly and are cut short, if I go back to menu and reload the black emporium save or, the later one where i've already left the emporium, sound will still be absent, and if I exit the game completely my ps3 will crash and reboot before exiting. I hope it helps to solve this issue.