i hook up my ux1, go to system preferences on my mac and select the usb input. when i try and play, its still using the internal microphone!

someone please help! its been like this for a week and have torn out so much hair ive had to shave my head so people dont ask why im balding at 21 years old.
when in garage band you have to go to the garage band preferences and click on the ux1, and then after you switch the preferences you have to open a new track for it
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