[linux-audio-user] Upgrading CCRMA FC3 >> FC4

[Nathan]

Hey all,
Does anybody have experience upgrading from CCRMA FC3 to FC4?  I've
seen that all you have to do is change any instance of fc3 in the repo
path to fc4, but the problem is it's a client's computer, and I'd
rather not crash the heck out of it.

What he really needs is Lilypond, with Rosegarden a close second. What
is the best way to go about installing everything?  Should I not be in
X?  Or should I just open the default X session with no WM, and
reinstall everything from Synaptic?

Any help would be really appreciated.  Thanks!
-Nathan