需要 openSUSE Tumbleweed ，用 root 執行：
zypper addrepo https://download.opensuse.org/repositories/home:ykoba:multimedia/openSUSE_Tumbleweed/home:ykoba:multimedia.repo
zypper refresh
zypper install SDL2_mixer
需要 openSUSE Leap 15.1 ，用 root 執行：
zypper addrepo https://download.opensuse.org/repositories/home:ykoba:multimedia/openSUSE_Leap_15.1/home:ykoba:multimedia.repo
zypper refresh
zypper install SDL2_mixer
需要 15.4 ，用 root 執行：
zypper addrepo https://download.opensuse.org/repositories/home:ykoba:multimedia/15.4/home:ykoba:multimedia.repo
zypper refresh
zypper install SDL2_mixer