recording audio mac mini

I have a mac mini running mountain lion  and I have  ambrosia's Snap  Z pro,  which works fine recording   the screen along with audio with my old iMac, running Snow Leopard.   As of now,Snap Z Pro is not compaiable with mountain lion.  Any suggestion on other software??

I have an  combination earphone with microphone (usb), but no microphone to plug into the microphone port.  Also, I should of figured the mac mini would';t have a built in microphone.

Thanks in advance,

Buzz