I have checked FAQ's and searched under audio and sound and cant find anything that fits my audio problem. I can hear everyone else but cannot transmit in RO. TeamSpeak works fine and the same problem appears to be affecting three of us. Turning off ZA (I am behinde a router FW) makes no difference and we have looked at the instructions. All other aspects of RO run fine and HL2 appears to be fine. I am using using a Hercules sound card. My only thoughts at the moment is that it could be a port forwarding issue specific to transmitting audio. So I am hoping somebody can give me a clue.