For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:frispete:mpd/openSUSE_Tumbleweed/home:frispete:mpd.repo
zypper refresh
zypper install nas
For openSUSE Leap 42.1 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:frispete:mpd/openSUSE_Leap_42.1/home:frispete:mpd.repo
zypper refresh
zypper install nas
For openSUSE 13.2 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:frispete:mpd/openSUSE_13.2/home:frispete:mpd.repo
zypper refresh
zypper install nas