My "On the Field" sounds are inaudible. Help anyone?

[DmAc2k6]

I just bought Madden 10 a couple of days ago and am having a pretty good time with it.

But today I'm having a sound problem. All of the "On the Field" sounds (tackles, kicks, QB voice, etc) are inaudible. My controller still vibrates, but there isn't any sound. The play-by-play, Ask Madden, and the crowd are all fine though. I checked the Volume Control, and it's still set to 90.

Has anyone else experienced this problem, and is there a way to fix it? Could it be a disc issue? The lack of sound is taking away from my experience.

Sorry if there is already a thread on this. I tried using the Search option but didn't really find anything.

Edit: Nevermind. I figured it out. A mod can lock this.

[Whaaaazuuuuup]

Well...atleast share with others incase some other than you has this issue...