I am about to install my empeg MKI with the factory monsoon head unit on my 2001.5 Passat.

If anyone is interested, I FINALLY found a way to do it without replacing the head unit. There is a company called BlitzSafe that sells an adapter that you can hook into the CD changer input that tricks the head unit into thinking the empeg is a CD changer.

They are at http://www.blitzsafe.com

I will show pics once the install is complete.

John