[texdvd] single-layer vs. otherwise

[Karl Berry]

Hi Stephen - thanks for the searching. I'm just not seeing a good
alternative to the dual-layer writing.

Manfred, do you know where the dual-layer discs for the dante
manufacturing were sourced?

USB drives would be fine, I expect, but they are soooo much more
expensive than blank dvds (last time I looked, anyway). I don't expect
anyone to pony up for those. --thanks, karl.