Copyright for xmix source package in Xenial

This is Debian GNU/Linux's prepackaged version of the xmix utility. This
package provides an X11 based graphical interface to the sound driver
mixer.

This package was put together by me, Owen Dunn
, from the original sources, which I
obtained from:
rzbsdi01.uni-trier.de:/pub/unix/audio/xmix/xmix-2.1.tar.gz

The changes were very minimal - merely adding support for the Debian
package maintenance scheme, by adding various debian/* files.

xmix is Copyright (C) 1992 Steve Haehnichen.

It is licensed under the General Public License version 1 or any later
version. You can find it in /usr/share/common-licenses/GPL-1 on a
Debian GNU system.