$ gmusicbrowser
Error loading gmusicbrowser_dbus.pm :
Base class package "Net::DBus::Object" is empty.
    (Perhaps you need to 'use' the module which defines that package first,
    or make that module available in @INC (@INC contains: /usr/bin/../share/gmusicbrowser /usr/lib/perl5/site_perl /usr/share/perl5/site_perl /usr/lib/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib/perl5/core_perl /usr/share/perl5/core_perl .).
 at /usr/bin/../share/gmusicbrowser/gmusicbrowser_dbus.pm line 13.
BEGIN failed--compilation aborted at /usr/bin/../share/gmusicbrowser/gmusicbrowser_dbus.pm line 13.
Compilation failed in require at /usr/bin/gmusicbrowser line 415.
 => controlling gmusicbrowser through DBus won't be possible.

Undefined subroutine &GMB::DBus::simple_call called at /usr/bin/gmusicbrowser line 417.
BEGIN failed--compilation aborted at /usr/bin/gmusicbrowser line 433.

# pacman -S perl-net-dbus

$ gmusicbrowser

Can't load either gstreamer-1.x (via Glib::Object::Introspection) or gstreamer-0.10 (via GStreamer) -> gstreamer output won't be available :
 Can't locate Glib/Object/Introspection.pm in @INC (you may need to install the Glib::Object::Introspection module) (@INC contains: /usr/bin/../share/gmusicbrowser /usr/lib/perl5/site_perl /usr/share/perl5/site_perl /usr/lib/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib/perl5/core_perl /usr/share/perl5/core_perl .) at /usr/bin/../share/gmusicbrowser/gmusicbrowser_gstreamer-1.x.pm line 9.

Reading saved tags in /home/me/.config/gmusicbrowser/gmbrc ...
Reading saved tags in /home/me/.config/gmusicbrowser/gmbrc ... done

# works fine