Hi there!
It seems to me that I can specify and save a preset where the WAV file path used in the Convolotron contains spaces, but if I try to load such a preset, rackarrak complains: "Convolotron is unable to open the audio .wav file"
When this happens, the output signal lever suddenly rises to max level for some reason, but that's another matter...
Btw, Debian Sid and:
tmac@asus:~$ dpkg -s rakarrack
...
Architecture: amd64
Version: 0.6.1-3
...