Sound effects

Hello everyone,
I released version 0.11-2 of sfsim. sfsim is a realistic 3D space flight simulator with an advanced single-stage-to-orbit space craft.
I have now added several sound effects and a music track:
- Added Andrewknâs At the Edge of Space for the event when crossing 100 kilometer height
- Air flow noise depending on dynamic pressure
- Drag noise caused by air brakes and gear
- Sound effects when retracting or deploying gear
- Main rocket engine sound
- Sonic boom
- RCS thruster sounds
- Tyre skiding sound
Let me know any feedback and comments in the sfsim playtest discussion forum.
Enjoy!