GNOME Internet Radio Locator for GNOME 3 was successfully moved to GitLab and you can download the source code from https://gitlab.gnome.org/GNOME/gnome-internet-radio-locator
GNOME Internet Radio Locator for GNOME 3 version 1.4.0 is available from https://download.gnome.org/sources/gnome-internet-radio-locator/1.4/gnome-internet-radio-locator-1.4.0.tar.xz
You can download binary packages from https://people.gnome.org/~ole/gnome-internet-radio-locator/