Unmount SD Card Part 2

FCP X 10.2

I have an 8 gig SD card I have mounted that has audio files on it. I imported the audio in FCP X with no problem. Now I want to unmount it so I can mount the SD card with the VIDEO files. I select Import to get the import dialog, I click on the unmount arrow icon to the right of the SD card, FCP X gives me a dialog about how I can't unmount it because it's in use by an application. Yeah, it's in use by FCP X!!! Now unmount it!

Seriously, Apple is close to being the only $1 trillion dollar company in the world and they can't get this right?

Is there a trick to this?

Thanks!
Scot