Updated.
Added Admin Only voice channel.
Use either the submitted .smx or copy the inc file to scripts/include and then compile the plugin, yourself.
Thanks to 166MMX for figuring out why SetClientListening didn't work.
Binds for Admin Only channel:
Code:
alias "+admintalk" "admin_voice 1; +voicerecord"
alias "-admintalk" "-voicerecord; admin_voice 0"
bind "x" "+admintalk"
Remember to reboot the server after installing the plugin.