I have a CDA 7998 with an Ai-Net cable running to an ERA G320 processor. I'd like to install a 1/8" Stereo Auxillary input for mp3 players but i'm not sure how do to this. My ERA G320 has a pair of RCA inputs for non-AiNet Head units, but can i use this simultaniously with the Ai Net still plugged in?

thanks. and Merry Xmas.