Plug In Decoder For Athearn CF7?

[FCIN]

I think we need some of Doc Wayne's "expertise" on this one... :?

Heading out to the LHS this morning. They have a fellow there that is supposed to be a "DCC expert" - evening doing custom installations so I'll see what he comes up with. I am now interested in seeing if I can put sound in one or both of these CF-7's, along with a Kato SD40-2 (custom painted for L&N), but at close to $100 a pop, it'll have to be done as finances permit. Does appear to be room in the CF-7 for a speaker to be mounted in either the cab as Gary suggested or in the hood as suggested by woodone.