Ahoy!

Is there a special trick for 'arming' a non-midi audio track in ACID 9 PRO?

I am trying to record audio with a Blue Yeti Nano. and for some reason, whenever I open a new audio track to record, the 'arm' button is ghosted, and I am unable to click it at all. The 'arm' button is also ghosted on the main master controls. I have tested the mic with a free downloaded version of Audacity, and it works fine there....so....is there a setting I need to set up to allow me to record, cuz it ain't workin'. Any help or tips would be appreciated.

I'm using Windows 10, and a brand spankin newly downloaded Pro 9.

I'm super new to Pro 9. I had Pro 7 back when Sony had it, and those arm buttons work fine.

Thanks for your time.