Being a chiptune fan, I decided that someone else could benefit from this, since this soundtrack isn't available anywhere else in the Internet as streamed format.
Ogg Vorbis (OGG).7z (http://www.mediafire.com/download/b9u7v73uhi8wq91/Ogg_Vorbis_(OGG).7z)

Forgot to add these three:
Ogg Vorbis (OGG) 1.7z (http://www.mediafire.com/download/7m1zrcewwkgbcek/Ogg_Vorbis_(OGG)_1.7z)
The title theme, the ending theme and the high score theme. If you are familiar with the expression "digidrum", then let me explain. These three are entirely "digi", the only three tracks in the soundtrack that aren't chiptune, but tracker music. Tracker music in the Atari ST was extremely limited. So, these aren't as good as the Amiga counterparts.
Also this:
http://www.mediafire.com/download/dchw7d44v0444fs/Ogg_Vorbis_(OGG)_0.7z
The soundtrack of Turrican 2 for the Atari ST. Larger and entirely chiptune. No digi tracks.