Connect the M-Audio Fast Track Pro to the computer via USB cable.
Open Pro Tools, click "File" and select "New Session."
Sync the Fast Track Input 1 to Pro Tools by selecting "Analog In 1" on track 1 in Pro Tools. Repeat this process for Input 2 by selecting "Analog In 2" on track 2 in Pro Tools.
Connect two external audio sources to the M-Audio Fast Track Pro via XLR or 1/4 inch instrument cables.
Click the "record" button on tracks 1 and 2 in Pro Tools to arm the tracks for recording.
Click the "record" button on the transport bar to begin recording in Pro Tools.
Begin the DJ performance using the two external audio sources. Pro Tools will capture each audio source independently.