libao4 from home:gcomes.obs:Steam_Leap_16.0 project

需要 16.0 ，用 root 執行：

zypper addrepo https://download.opensuse.org/repositories/home:gcomes.obs:Steam_Leap_16.0/16.0/home:gcomes.obs:Steam_Leap_16.0.repo
zypper refresh
zypper install libao4