Error 404: working url: http://www.pupnik.de/pingus.html

First I removed all the old files and installed latest Pingus directly from the debs (opera & app manager).

echo $PATH: /usr/bin:/bin

So you need to run it with command /usr/games/pingus but it doesn't find datadir (checking for file: '/usr/games/.../share/pingus/data//data/core.res)

Ok you need to include datadir to start command:

$ /usr/games/pingus -g 800x480 -f --fast-mode --datadir /usr/share/games/pingus/data/

Then Pingus starts and you can see black screen and mouse cursor couple seconds but then it crashes: Unable to initialize SDL_Mixer: No available audio device

UPDATE: without sounds it runs fine (/usr/games/pingus -g 800x480 -f -s -m --fast-mode --datadir /usr/share/games/pingus/data/)