So, even after the latest changes from Mark/whoever, when I do:

team -vr 1m 13 <heart.raw-sw44 >/dev/sound

with the source file in NFS, I still get very high (up to 20.5ms)
interrupt latency the entire time it's talking to the network.  The
largest value I've seen was:

Aug 17 01:28:53 chomp /netbsd: audio: play interrupt(400) off relative by 20515 us (49970)

I haven't explored why, but I thought I'd mention it.