Occasionally when I start up the game no sound plays at all. It seems to be related to restarting Destiny after I have turned off my console and been automatically returned to the title screen. It is not an issue with my TV or Xbox because the sound works in the Xbox home screen and in other games. The issue persisted even after I restarted my console. I was able to fix it by starting another game on the system and then coming back to Destiny, which presumably kills Destiny and restarts it. However, this is an inconvenience and should be unnecessary.