I captured voice files 
from all three seasons.  After cleaning them up I combined them with 
the robot's background noise.  The background runs continuously on one
channel while the speech plays every minute or so on the other channel.  
I spent over 6 months re-editing and remastering these vintage robot lines. 
They are 
not merely "lifted" from
the shows and assembled... but individually digitally remastered, cleaned,
balanced and equalized. It's a continual work in progress as I have made
many changes to these discs even since their creation.