The most recent developer video diary from Lionhead Studios deals with a behind the scenes look at the audio and soundtrack of Fable 2.  This free-roaming RPG requires a detailed soundtrack but they managed to fit 9,000 unique sound fx into 90mb on the disk.  Even modern console systems have a limited amount of memory dedicated to run audio, but 90mb leaves alot of room for dialog and music.

An excellent look into the audio direction of Gears of War 2.  The design team from Epic talk about their goals in the for music, dialog, and sfx of the game.

We edited announcer dialog for Madden Football ’09