While working on a full sound/music mod for Metallica I decided to modify ALL of the callouts to sound more "metal".
Besides the tedious task of exporting/importing, the process was to stretch each sample by 2, pitch down ~40%, change the tempo back to the original length, then compress to a decent level.
Here's a short video with the modified sounds. (NSFW: Naughty words)
What do y'all think?