#1
Can I do it? If so how?

I've selected the sound cars as my UX1, but no sound is playing through it.
#2
I'm not sure but just go into soundsettings and put in your interface in every row possible?!
Schecter C1 Classic
Fender Vintage -57 Ri Stratocaster
Fender Blues JR w/ 12"Cannabis Rex
Mad Professor Sky Blue OD
Wampler Ego Compressor
TC Electronics Stereo Chorus/Flanger