Re-use disk Space?

[Daniel Gonzalez]

I have a quick question about re-apportioning disk space on my
computer (FreebSD 5.4RC2 Athlon 850 MHz 512MB RAM)
Here is the output of df -H:

REDE2SRV# df -H
Filesystem     Size    Used   Avail Capacity  Mounted on
/dev/ad0s1a    520M     61M    418M    13%    /
devfs          1.0k    1.0k      0B   100%    /dev
/dev/ad0s1f    5.3G    805M    4.1G    17%    /music
/dev/ad0s1e    1.5G    133k    1.4G     0%    /tmp
/dev/ad1s1d    8.4G    7.0G    732M    90%    /usr
/dev/ad0s1d    1.5G     48M    1.3G     3%    /var

My /usr partiton is almost at capacity (90%) on a separate disk
(/dev/ad1) from the rest of the other partitons. I allocated way too
much space for my /music partition (dev/ad0s1f). I don't plan on ever
using up the 4.1GB that's left over. I've been archiving (to CD) my
mp3s, oggs etc so I always have a backup. What I wanted to know is
would it be possible to reclaim some disk space under the /music
partion and link a /usr sub-partition (/usr/home) to that reclaimed
space? Hopefully I've explained myself clearly. What part of the
handbook sections could I start with?

Regards
-- 
Dan Gonzalez
spammesilly at gmail.com
AOL IM: signulth
Google Talk: spammesilly