[sdiy] Mono to Stereo

[Moho Disco]

I just got a brand new Electrix Mo-FX on $99 blowout
from Guitar Center... but the problem is, I want to run
my mono analog synths through it, and it doesn't have
a mono input.  Whatever side you plug it into, that's
the only side you hear it on (unlike other fx processors
I own that put the mono signal in the middle). This
is the ONLY downside to this box so far...

Now, running the unit out of a mixer is NOT an option
for me... I know some of you will be suggesting it.

How do I build a little box with a mono input and stereo
outs, that will put the mono signal in the middle?  Surely
this has got to be super easy to do... If somebody could
point me in the right direction, or to some schematics I'd
appreciate it...

Thanks,

Lava