I was so curious what would happen if i install my aliendalvik.rpm and my gapps on nexus 5 with base CM11. I had to install SFOS 1.1.29.8. I did it 30 minutes ago. Aliendalvik installed without a problem, Gapps installed but when it asks you to install 3 apks at the end it installed just one of it Google play. Then i installed manually 1 GoogleLoginService.apk 2 GoogleServicesFramework.apk 3 GmsCore.apk which are in here /opt/alien/system/priv-app and guess what? Youtube works well WITH SOUND. Camera works too So something is wrong with the base CM12.1 that's why sound does not work in youtube app (and some others too) in aliendalvik with CM12.1 base and works for me now on CM11 base.