While I haven't personally heard about the CPU deep ball, I do remember someone from EA (not sure if it was Adam or not) confirming they were expanding the use of stadium sounds in the patch.
EDIT: Well just read AA's post above.
For those that don't know, the version of the game being prepared for release will only play stadium sounds during home games for the active main human profile. Meaning, in your dynasty, when you go on the road, custom stadium sounds will not play, even if you have them loaded for the team you're playing. The patch will enable this.