/vr/ - Retro Games

Just bought one of these as my setup is rapidly getting out of hand:
http://www.extron.com/product/product.aspx?id=mls506sa&search=Mls%20506

Only issue is actually getting audio into the thing. Anyone got a reasonably priced source of 5way (2way could work at a push because unbalanced) 3.5mm pitch captive screw terminal blocks? Everything I've seen is either hideously overpriced or probably won't be delivered until 2017 (lolchinapost). Alternatively, Extron CSR 6 rca adaptors like below?

http://www.extron.com/product/product.aspx?id=csr6&allparts=1&s=11

TIA

>>3213157
Found this, though it seems to only have 3 RGB inputs.

Hoping for something with 6 RGB & stereo audio.
Basically the BNC equivalent to something like the Shinybow SB-5525.