There are two PKGBUILDs of google-musicmanager: [google-musicmanager]:https://aur.archlinux.org/packages.php?ID=50891
[google-musicmanager-beta]:https://aur.archlinux.org/packages.php?ID=54155 My opinion is to delete the google-musicmanager-beta. Google only provide one downloadable version of google-musicmanager,sometimes is a release version and sometimes is a beta verion,there is no difference between stable version PKGBUILD ond beta version PKGBUILD like other package do,so there is no need to create a beta version PKGBUILD alone.