Howcome I can’t see my tracks in the project pool? I imported a song to look at the wave form out of curiosity and have since deleted it. Later I went to my pool to experiment with elastique pro but the only track visible is this song that I previously imported. 
Are they in the Trash Bin? Is there a missing files window that pops up when you start the project?
No error messages. Is the pool only for audio - no midi? To use time stretching, do I have to bounce midi. I’ve watched a tutorial or two a while back and I can’t recall if they were doing it with audio.
Not entirely sure about the time stretching, though I would bet it’s exclusively for audio if you are referring to the elastique algorithms. Yes, the pool is only for audio. So you lost your MIDI parts?