Download the psx4m-gui package from:

Code:

http://repository.maemo.org/extras-devel/pool/fremantle/free/p/psx4m-gui/psx4m-gui_0.4-6.11_armel.deb

And then (as root) use dpkg to install it :

Code:

dpkg -i psx4m-gui_0.4-6.11_armel.deb