[sdiy] LM3914/Voltage Controlled Electro-Optical Mixer Question

[Fahl, Romeo]

I'm planning on building a pair of Grant Richter's Voltage Controlled
Electro Optical mixers soon.  Before I lay out the front panel, I'd like to
know the following:

I'd like to add an LED to each input to indicate which input is active.  Can
the the 3914s outputs drive an extra LED in series with the Vactrol LED to
accomplish this?  

The original schematic is located here:

http://www.musicsynthesizer.com/Corpse/VCEOM.html

Thanks, y'all!

Romeo