Alright, now the app boots and it's somewhat functional. Not very user friendly, though:

- First boot dialogs ask for usual Linux directories, but not the ones available in the device ("/floppy"?)

- No finger friendly / Maemo 5 UI. Don't get me wrong: it's your choice.

Videos can be downloaded but mplayer is required to play them. Since there is no mplayer in extras-devel at the moment, this is how far I could get.