I'm trying to install the Panucci resuming podcast player from extras-testing using the application manager GUI and I'm getting a dependency failure:

Unable to install "Panucci resuming audiobook and podcast player"
Application packages missing: python-ttk2(>=2.12.1-6maemo10)
python-simplejson


I'm confused, shouldn't the apt-get CLI or Application Manager GUI automatically download dependent packages?

Are the above packages not in any repositories and if so, how did Panucci make it onto the repo?