Downloading files from -CURRENT, How?

[Nikolas Britton]

I'm trying grab a copy of /usr/src/sys/dev/sound and
/usr/src/sys/modules/sound from HEAD so I can MFC a few things. I
tried this, but it didn't work:

$ more current-supfile
*default host=cvsup12.us.FreeBSD.org
*default base=/usr/src/HEAD/var/db
*default prefix=/usr/src/HEAD/usr
*default release=cvs tag=HEAD
*default delete use-rel-suffix
*default compress
src-sys

I'm not really sure of the best way to do it. Thanks.