I used ardour to create four mono tracks, one for each channel. I didn't connect them directly to binaural.pssp. I used the example revFile.ck to add reverberation to some of the recorded dry tracks.
Some of the transitions between clips are not very smooth. If I spent more time fading and extending reverberation tails I may have been able to avoid this.
Once I got an idea I felt I could pull off successfully this assignment became a lot of fun.