On the left side of your pic (inputs) select ALL the available options; MS Soundmapper, M-Audio 1/2 and M-Audio 3/4 by clicking them (highliting them)

Return to RB and tape the key back down on the synth
Highlite a blank stereo audio track and hit 'record' for a couple seconds

You should get three stereo tracks as a result.
The first one will be the MS SoundMapper input, the next will be the M-Audio Line In 1/2 and the third will be the M-Audio Line In 3/4. Do any of these show a resulting wave file in the Tracks window after 'keep take'?

Make your sound your own!
.. I do not work here, but the benefits are still awesome