I bought this Calkwalk music back the other day from a CompUSA hoping the midi cable would work with my Casio music keyboard. However, I quickly found out that Casio doesn't make USB drivers for the USB midi cable. The only reason why I bought the software was because of the midi cable. So, here it is for sale since it's useless to me. I read other keyboards are compatible with OS X and Garageband like Yamaha. If you have a Yamaha, this would be useful to you since you could download drivers from their website.
I'm asking 50$ for the software and cable. I'll pick up the shipping for it. The cable itself is worth 50$. Everything is in new condition and the software CD is unopened. I accept Paypal. Pictures from Calkwalk website below.
Further information about the software itself is
here.
PM me if you have any questions.