Update animated texture on plane when NOT selected? I'm modeling a complex organic model guided by an animated texture as a reference.
This sequence updates fine as long as I only keep the textured plane selected. 
Unfortunately it freezes updating when NOT selected (on editing another mesh) and I'm scrolling through the timeline to check if everything is fine.
Is it possible in Blender to make the sequence on the unselected reference image plane update constantly?
I'm modeling in standard 3D-view in Blender 2.77a
TIA!
(Enhanced) Answer from OP moved here:

In Object Mode simply Add -> Empty -> Image



then open the desired movie or image sequence file(s) under the Empty's Properties -> Data 


set the source to Match Movie Length and Auto Refresh.



This way the sequence not only updates correctly when the Empty is selected but also, when working on another object!