linux # lsusb
Bus 005 Device 001: ID 0000:0000
Bus 004 Device 001: ID 0000:0000
Bus 003 Device 001: ID 0000:0000
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 005: ID 041e:4128 Creative Technology, Ltd
Bus 001 Device 001: ID 0000:0000

linux # emerge -pv libnjb gnomad

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild   R   ] media-libs/libnjb-2.2.5  0 kB
[ebuild   R   ] media-sound/gnomad-2.8.2  USE="-debug" 0 kB

/etc/hotplug/usb/nomad.usermap

# Creative Nomad Jukebox
nomadjukebox	0x0003	0x0471	0x0222	0x0000	0x0000	0x00	0x00	0x00	0x00	0x00	0x00	0x00000000
# Creative Nomad Jukebox 2
nomadjukebox	0x0003	0x041e	0x4100	0x0000	0x0000	0x00	0x00	0x00	0x00	0x00	0x00	0x00000000
# Creative Nomad Jukebox 3
nomadjukebox	0x0003	0x041e	0x4101	0x0000	0x0000	0x00	0x00	0x00	0x00	0x00	0x00	0x00000000
# Creative Nomad Jukebox Zen
nomadjukebox	0x0003	0x041e	0x4108	0x0000	0x0000	0x00	0x00	0x00	0x00	0x00	0x00	0x00000000
# Creative Nomad Jukebox Zen USB 2.0
nomadjukebox	0x0003	0x041e	0x410b	0x0000	0x0000	0x00	0x00	0x00	0x00	0x00	0x00	0x00000000
# Creative Nomad Jukebox Zen NX
nomadjukebox	0x0003	0x041e	0x4109	0x0000	0x0000	0x00	0x00	0x00	0x00	0x00	0x00	0x00000000
# Creative Nomad Jukebox Zen Xtra
nomadjukebox	0x0003	0x041e	0x4110	0x0000	0x0000	0x00	0x00	0x00	0x00	0x00	0x00	0x00000000
# Dell Digital Jukebox
nomadjukebox	0x0003	0x041e	0x4111	0x0000	0x0000	0x00	0x00	0x00	0x00	0x00	0x00	0x00000000
# Creative Nomad Jukebox Zen Touch
nomadjukebox	0x0003	0x041e	0x411b	0x0000	0x0000	0x00	0x00	0x00	0x00	0x00	0x00	0x00000000
# Creative Nomad Jukebox Zen Micro
nomadjukebox	0x0003	0x041e	0x411e	0x0000	0x0000	0x00	0x00	0x00	0x00	0x00	0x00	0x00000000
# Second Generation Dell Digital Jukebox
nomadjukebox	0x0003	0x041e	0x4126	0x0000	0x0000	0x00	0x00	0x00	0x00	0x00	0x00	0x00000000
# Dell Pocket DJ
nomadjukebox	0x0003	0x041e	0x4127	0x0000	0x0000	0x00	0x00	0x00	0x00	0x00	0x00	0x00000000

/etc/hotplug/usb/nomadjukebox

#!/bin/sh
# Lifts a plugged in nomad jukebox to user space and
# optionally runs a client program.
# Written by Linus Walleij 2004, based on the "usbcam"
# script by Nalin Dahyabhai.
DEVICEOWNER=CONSOLE
DEVICEPERMS=0600
PROGRAM="cd ~; gnomad2 --display=localhost:0"

# Special quirk for SuSE systems using "resmgr"
# (see http://rechner.lst.de/~okir/resmgr/)
if [ -f /sbin/resmgr ]
then
    /sbin/resmgr "${ACTION}" "${DEVICE}" desktop usb
    exit 0
fi

# This is for most other distributions
if [ "${ACTION}" = "add" ] && [ -f "${DEVICE}" ]
then
    # New code, using lock files instead of copying /dev/console permissions
    # This also works with non-gdm logins (e.g. on a virtual terminal)
    # Idea and code from Nalin Dahyabhai <nalin@redhat.com>
    if [ "x$DEVICEOWNER" = "xCONSOLE" ]
    then
	if [ -f /var/run/console/console.lock ]
	then
	    DEVICEOWNER=`cat /var/run/console/console.lock`
	elif [ -f /var/run/console.lock ]
	then
	    DEVICEOWNER=`cat /var/run/console.lock`
	elif [ -f /var/lock/console.lock ]
	then
	    DEVICEOWNER=`cat /var/lock/console.lock`
	else
	    DEVICEOWNER="nobody"
	    DEVICEPERMS="666"
	fi
    fi
    if [ -n "$DEVICEOWNER" ]
    then
        chmod 0000 "${DEVICE}"
        chown "${DEVICEOWNER}" "${DEVICE}"
        chmod "${DEVICEPERMS}" "${DEVICE}"
	# Then run an optional program - this does not work yet.
	# su "${CONSOLEOWNER}" -c "${PROGRAM}"
    fi
fi