2 Mix Core cards?

I'm not exactly sure how it happened but I wound up with 2 Mix Cores. I know, weird. I have a Mix Farm as well but I'm wondering if my second core card can be used strictly for audio as is a farm card.



I have heard, anecdotally, that people have gotten away with this but no empirical evidence to be found.



Anyone have experience with this (possible) phenomenon?



Also, as I am a complete technophobe, I may seeking a tech in L.A. in the near future. Any resource for this?



Thanks!



Awe