Allright, I got the sound working.
I had to set the GAME PATH and LIBSDL. Allthough the sound quality is very poor. (scratchy sound)
Now I'm looking to fix the 60fps/60Hz issue.
EDIT: I've managed to increase my fps! In settings I had to choose the right driver that fit my graphics card, Nvidia.
Thanks for the help, I hope this topic can mean something for somebody in future.
You can set this in GAME_PATH environment variable
# GAME_PATH="/home/tim"
# libSDL.so
#
# You can set this in LIBSDL environment variable
# LIBSDL="/usr/lib/i386-linux-gnu/libSDL-1.2.so.0"