Cool Scook, thanks.
"simple when you know how"
John, so in this case you 
1.right click the Track Header pane and choose Insert MIDI track.

2.go to the Inspector pane and for the track input you leave at Omni and 
3. For Output you choose the TTS1 synth, then,
4. in the "widget" (The vertical section to the right?It has Quantize and arpeggiator on it) you choose Channel 2?
There must be something else.
When I play this track with the keyboard, it is still playing the first channel in the synth.

I haven't tried this type of thing yet but it sounds like John is saying there is a place in the TTS interface where you can route out the 4 different channels to your tracks. Sounds kind of like routing stuff in BFD where at first everything is just sent out to the BFD master but if you click on the BFD mixer channels you can select differnt outputs. Take a look at the TTS user interface and see if you can find something like that or check the manual which should tell you how to do this.

Just guessing though.

Oh and obviously you have to make sure that the MIDI notes are actually in the right spot of the PRV to trigger the sounds you want.