"Patrick Shirkey":
1: use pulse audio with jack-sink - easy
But have you gotten decent latency this way?
(i.e. at least less than 40ms)
2: use the jack-alsa plugin for alsa - not so easy
Why is this not easy?
It's just pasting a few lines into ~/.asoundrc, and then
you're done... Pretty decent latency too. I'm pretty
sure this solution is generally the best.
http://jackaudio.org/routing_alsa