@Christian Marcussen said:
This is not possible I'm afraid. Each collection can only be on one computer at a time.
I'm not so sure that we've all got the right end of the stick. I think that the licence is per instrument, not per collection. Therefore whilst you couldn't run Solo Violin on two computers at the same time, there is nothing to stop you from running Violin, Viola, Cello & Bass all on different computers.
DG