Just bought Dirt 3 and played it 2 times. First time everything worked great. Second time when the narrator was explaining a new racing event I could not hear any of his speech; however, a little speaker icon appeared in the bottom left corner of the screen. In addition in Rally events I could not hear my co-driver. I checked all the options I can think off and Speech is set to 100%. Any idea what my problem is? Do I have something muted I'm not aware of? (I know it's not my audio system because I switched to on-line play in GT5 and all speech worked ok.)