Covering silver wire for use as a speaker cable

Shink tubing is available at electronic parts stores (B+M or online.) It comes standard in 4 foot (or maybe it's 5 foot) lengths. I suggested it because you can get it large enough (in diameter) to easily snake the wire through, and then it will heat shrink to 50% of its original diameter.

It is made of polyolefin which I have to assume has great dielectric properties since it's used to insulate wire ;-)
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Thanks for the suggestions. I am going to give them a try.

Dgarretson, Nsgarch
What size should I buy ?

2mm cotton sleeves from RAM for proper litz braid, or various sized rolls of polyolefin HS tube from McMaster Carr if you just want to bundle 10 or so strands together inside one tube.

Ozzy, go to wirecare.com for shrink tubing in long lengths.I'd reccomend the 3:1 shrink ratio.They also have all kinds and colors of braiding,but no cloth type.Good luck and keep us informed on the project.