How do i use my Head set?

I have this awesome wireless turtle beach headset. I just got an HD TV and am using the HDMI cable for the HD gaming. However, the component AV cables can not be in along with the HDMI cable. This is a problem because my Wireless head set uses the Red and White audio input cables that run to an audio input on an RF signal transmitter, the input on the RF device is like the headphone port on an ipod. the audio data is sent wirelesslly to my headset. Is there a cable that i can get so i can use my headset with my HDMI cables.