Couldn't update as somethings missing. Something about gstreamer?

Tried uninstalling it then re-installing, but now can't install it either due to same problem.

"Unable to install 'Extra Decoders Support'. Some application packages required for the installation are missing."

"Unable to install 'Extra Decoders Support'
Application packages missing: gstreamer0.10-musepack(>=0.10.19-maemo1)
gstreamer0.10-plugins-good(>=0.10.23-0maemo1)"