You can get traders audio free if you have thinkorswim.com. It's in there, just look for it.
I find it very useful, and wouldn't trade with out it. Ben at tradersaudio is a bit annoying and gives to much info in my opinion. Tradethenews.com is much better. You get live news wire, and they calmly call out the big orders.
On Wednesday for example the ES was breaking out of a box in the morning, and Goldman bought 70. I went long on the break out, but then Goldman quickly sold 55, covering his long, so I covered mine at entry. We then, had an abrupt sell off.
Another good example is deciding whether or not to short a retracement. One day, after a sharp sell off, the ES was making a typical retracement to the 50 fib, and right in the area you start hearing all the big guys selling, and selling big. Once I start hearing 500 at a time being sold by goldman, merrill, etc..., I find it's a good time to join the party.
Okay, last example. One day we were shooting up to the moon. Not sure where to take profits, boom, JP Morgan steps in front of the train and sells 1500 cars, and then he adds 500 more. That was the top of the day, and if you didn't have pit audio, you wouldn't understand what happened right there.