I have noticed a few issues with the audio system in the game...

Some of the sounds jump around in the channels on my 5.1 system. Mostly the CELL soldiers talking and radios. Other environment sounds are normal, for example radios pan around the soundstage as you would expect.

Also, for some reason some sounds have disappeared, like the sound of powerjumping for my nanosuit - it no longer seems to play.

Ta