I just got a brand new music player (USB, HD-based) and try to mount it in Gnome. Of course i want it to automount, and tried to enable the gnome-volume-manager, which i finally managed. But nothing happens when i plug in the USB. I also created a /media directory (i hoped it would like to mount there...).
Then i searched these forums and found http://bbs.archlinux.org/viewtopic.php?t=7572, which i followed. Still without any success. Now i have no clue, whatsoever...
(It works of course in M$ 'dos)
Add dbus, and hal to your daemons line in your rc.conf. Gnome's gnome-volume-manager depends on these.
make sure to modprobe usb-storage and check your logs to see what /dev entry is connected to your usb drive. add that to fstab and gnome-volume-manager should work if you followed iphitus' advice above.
That worked - great! Thanks!