I'm kinda confused what you're after. I presume you're modding an MVS and you want the AV output to be a DIN socket.
The standard Neo (AES) DIN configuration is:
http://www.gamesx.com/avpinouts/neoav.htm
It's a fairly simple cable to make up - you could probably make it yourself with that pinout guide.
The regular AES AV DIN ports only gives mono sound, but uses all 8 pins - you may need ot think about that if you want stereo through the DIN socket.
What you probably want is someone to make up a cable and to mod your MVS for Stereo with phono sockets.
I'd be able to make up a cable, but I'm fairly rammed at work.