Changes the way deaf hear sounds
Created by: clusterfack
Dear shouldn't hear any sound coming directly from play sound, which should be the wrapper proc for most every sound. Put defines on the ambience channel and the admin played music channel.
Deaf people can no longer hear any regular sound, but they'll still be able to hear ambience, admin music, and jukeboxes.
Fixes #11632 (closed) Fixes #11631 (closed)