here is a good place to start if you want a hardware solution: http://tascam.com/applications/recording/mtr_digital_portastudio/

but if you need more inputs... the UX1 will simply wont work for you....

if you need a hardware interface with more inputs here is another good place to start:

http://tascam.com/applications/recording/pc_audio_interface/

if you are simply trying to do this with what you already have... it isn't going to happen i'm afraid...

you can only use one interface at a time and neither of your devices have enough inputs.