Modular Synth Panels

Hello out there, I realize this isn't the forum for this but it's the only one I'm a member of 
that someone might know something about this. I wanted to get some sheilded cable for 
my patchcords and I ended up ordering coaxial cable, 75 ohms by mistake. So I've got 50 
feet of this vcr-looking cable. I don't know anything about it. Does anyone know if it 
would be ok to use it for patch cords and general audio use? What does the 75 ohms refer 
to? 

thanks a lot,
steve