defaults write com.apple.iTunes invertStoreLinks -bool YES

This makes those little right-pointing arrows in iTunes point to your library, not the iTunes Store. If you want the iTunes Store, Option-click instead.

this is something that strangely doesn't happen automatically on ubuntu
in Ubuntu, just add

send host-name "dapperbox";

to your /etc/dhcp3/dhclient.conf file

you might need to do a

sudo /etc/services/networking restart

On your Mac, you can now do

ssh username@dapperbox

instead of

ssh username@1.2.3.4