the free version is available for download:
http://www.hgf-synthesizer.de/se/STS/STS.html

here are some awesome demotracks by Dimitri Schkoda (partly using additional material, partly more than one instances of STS-26):
Track 1: 10 MB - watch out it's a long atmospheric one!
http://www.hgf-synthesizer.de/se/dl/STS ... -Earth.mp3
Track 2: 2.6MB
http://www.hgf-synthesizer.de/se/dl/STS ... othing.mp3
Track 3: 4.6 - about 1:20 Intro before ...
http://www.hgf-synthesizer.de/se/dl/STS ... lution.mp3
Track 4: 4MB - really dark!
http://www.hgf-synthesizer.de/se/dl/STS ... uction.mp3
Track 5: 4.6MB
http://www.hgf-synthesizer.de/se/dl/STS ... -Souls.mp3
Track 6: 2.9MB
http://www.hgf-synthesizer.de/se/dl/STS ... rgency.mp3
from here featuring low octave loop play
Track 7: 640kB
http://www.hgf-synthesizer.de/se/dl/01L ... sition.mp3
Track 8: 1MB
http://www.hgf-synthesizer.de/se/dl/02L ... reedom.mp3
Track 9: 1MB
http://www.hgf-synthesizer.de/se/dl/03L ... of-Joy.mp3
Track 10: 1.3MB
http://www.hgf-synthesizer.de/se/dl/06L ... Levant.mp3
Track 11: 2MB
http://www.hgf-synthesizer.de/se/dl/12L ... mories.mp3
Dimitri wrote:
These demos are a little window on an incredible experience with the magical STS-26 Pro of H.G. Wheel of Fortune - The Master of Sounds.
From Ambient to Jazz,
From Cold wave to Soundtrack,
From Rock to Classic, ...
Welcome to the "Everything is Possible" !
It's a real privilege to meet new worlds.
This one is completely unknown ! !
This one gives you the opportunity
to meet a real great paradox between
the complexity of sounds and the easiest ways
to create them, to play them because STS-26 is really
facinating and intuitive !!!
Try by yourself and hear !!!
More, more than ever,
you will find here all you need
to magnify your creativity,
to go beyond musical limits you can only imagine till now !
These demos are C O M P L E T E L Y AND E X C L U S I V E L Y
made with the STS-26 PRO.
It means :
- Complete improvisation ! ! ! !
- No external fx ! ! ! !
- No other synth ! ! ! !
- Even No sequencer ! ! ! !
Just the recorder and the STS-26 Pro !
Incredible but completely true !"
H A V E F U N ! ! ! ! ! ! ! ! ! ! ! ! !
HG Fortune

