[LAU] Interfacing an electric guitar

[jonetsu at teksavvy.com]

Hello all,

Just got an electric guitar.  First time.  Now putting on a new set of
strings.

Got a 1/4" wire and a passive direct box that's already used for a
Wavedrum.  Got also a small guitar amp with an headphone out jack, as
an option.  The audio card is a M-Audio 1010LT.

Can I simply take the 1/4" wire from the passive direct box and connect
it to the guitar ?  I believe there's a guitar processing app out there
called something like rackarrack or such.  Does this work through jackd
as in doing the audio routing using qjackctl ?

Alternatively if I want the amp's sound and processing, I can simply
use the amp's headphone out, although I'd like to try the computer
based only interface and processing.

Cheers.