I've converted Shisensho from the N800 version, as it's no longer maintained for the N900.

To install:

• Download:

  $ wget -c http://jj0.org/n900/shisensho_0.3.1-1-1_armel.deb

• Install:

  # dpkg -i shisensho_0.3.1-1-1_armel.deb