I've registered to this site just to post in this thread. 
The trick of shutting CJ up is modding the peds.ide file 
replace this line: 
0, null, generic, PLAYER1, STAT_PLAYER, player, 0, 0, null, 9,9	, PED_TYPE_PLAYER, VOICE_PLY_CR, VOICE_PLY_CR 
with this: 
0, null, generic, PLAYER1, STAT_PLAYER, player, 0, 0, null, 9,9, PED_TYPE_PLAYER, VOICE_GEN_NOVOICE, VOICE_GEN_NOVOICE 
or just download the file (with backup and readme file) here: 
http://s37.yousendit.com/d.aspx?id=11R0KT9...XB335QT6ZK53N5X 
No Thanks required.