For any Cowboy fans out there, I thought I would post these custom stadium sounds that I made a few years ago (I was really bored that afternoon). These sounds have the actual PA announcer audio as well as some in-game "Orange Power" audio. I also put in some echo and a little reverb to give it that stadium feel. Some of them are better than others, but they all sound pretty good in-game and it makes the home games feel a little more lively and authentic.
The easiest way to get these is to open the video, copy the URL at the top, go to "listentoyoutube.com," paste the URL in the bar, and it will extract the audio and make a downloadable MP3 file. (Note: I have used this site several times, as well as a number of friends and nobody I've talked to has had any problems; however, you might want to make sure your firewalls are up just to be on the safe side.) Enjoy.
1st Down "Oklahoma":
http://www.youtube.com/watch?v=kJ0RJNp4Yr8
1st Down OSU Chant:
http://www.youtube.com/watch?v=EIJEpG9boFY
1st Down Ride 'Em:
http://www.youtube.com/watch?v=4bviCGv2q4Y
3rd Down Defense/Orange Power:
http://www.youtube.com/watch?v=wKPoyG7wEl4
3rd Down Defensive Stop:
http://www.youtube.com/watch?v=e6cAAUD-Ztg
PAT Conversion (Ride 'Em):
http://www.youtube.com/watch?v=ywDRbwv4KuI
Touchdown (Waving Song):
http://www.youtube.com/watch?v=wFXCwUPlhXQ
Turnover/4th Down Stop:
http://www.youtube.com/watch?v=DwdT_ksm6AQ