Can jackd and pulseaudio coexist?

[Daniel B. Thurman]

I am trying to use Rosegarden, and it seems that it requires jackd
in order to run.  Yes I poured over the internet docs but have yet
to understand why using the jack-audio-kit app (qjackctl), jackd
complains that another app is using it and I am guessing it is
pulse-audio?

Here is is the barf:

10:59:37.118 Patchbay deactivated.
10:59:37.168 Statistics reset.
10:59:37.207 ALSA connection graph change.
10:59:37.404 ALSA connection change.
10:59:39.647 Startup script...
10:59:39.647 artsshell -q terminate
10:59:40.091 Startup script terminated with exit status=256.
10:59:40.093 JACK is starting...
10:59:40.094 /usr/bin/jackd -R -dalsa -dhw:0 -r48000 -p1024 -n2
10:59:40.136 JACK was started with PID=18291.
jackd 0.116.1
Copyright 2001-2005 Paul Davis and others.
jackd comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome to redistribute it
under certain conditions; see the file COPYING for details
JACK compiled with System V SHM support.
cannot lock down memory for jackd (Cannot allocate memory)
loading driver ..
apparent rate = 48000
creating alsa driver ... hw:0|hw:0|1024|2|48000|0|0|nomon|swmeter|-|32bit
control device hw:0
the playback device "hw:0" is already in use. Please stop the 
application using it and run JACK again  <==========
cannot load driver module alsa
10:59:40.192 JACK was stopped successfully.
10:59:40.192 Post-shutdown script...
10:59:40.192 killall jackd
jackd: no process killed
10:59:40.607 Post-shutdown script terminated with exit status=256.
10:59:42.260 Could not connect to JACK server as client. - Overall 
operation failed. - Unable to connect to server. Please check the 
messages window for more info.

Anyone know what I need to do?
Is there a HOWTO to get this all working on F10?

Thanks!
Dan