One of the great improvement of the 1.7 beta is the addition of lines animation (love it!)
Unfortunately, the lines are dropped only on the output screen and there isn't a simple way a the moment to use DMX lines with the cool animations created in surfaces/lines, since dmx fixtures are created only in the input screen.
I've found a workaround for now (output mm to syphon and get it as input again in mm with a simple quartz composer patch), but I hope we will find a better way in the final release!
Thank you!