I've got to rewire my new house. New speaker wires, component, composite, HDMI, CAT5, coax, etc.

I'm looking for sources of flat cables. Not the flat kind like flatire (decorp) that sticks to the wall, but more like flat wire that can be run under carpet.

Here's what I've found so far:

HDMI: flat Altona, though I need a source
Speaker: Taperwire but only in 14 ga. I'd prefer at least 12 ga. Would also prefer white.
Component/Composite/RCA: ?
CAT5: Taperwire or VPI
Coax: I've only found 8" ones for windows.