Comment 4 for bug 901338

I should add that this only works if the headset is actually plugged in while xfce4-volumed is started *after* the USB headset is connected, so manually killing the process and launching it again is often necessary.

To save me from regularly doing this, I've mapped spare buttons on the headset as follows:

"amixer -- sset Master playback 10%-" to XF86AudioPrev
"amixer -- sset Master playback 10%+" to XF86AudioNext
"amixer -- sset Master toggle" to XF86AudioPlay

Definitely not as nice as using the volume scroll wheel, but it works. Perhaps a script to restart the xfce4-volumed process could have been triggered via Udev to provide a nicer looking work-around, but I didn't spend any more time on it.