In the cases where no buffer was process yet or the index is not available, get_pulsesink_get_mute() would unconditionally return FALSE. https://bugzilla.gnome.org/show_bug.cgi?id=610337
In the cases where no buffer was process yet or the index is not available, get_pulsesink_get_mute() would unconditionally return FALSE. https://bugzilla.gnome.org/show_bug.cgi?id=610337