A new Gamestudio update is available for a public test:

http://server.conitec.net/down/gstudio_8302.exe

Some of the new functions of Gamestudio 8.30: OpenAL, environmental sounds effects, improvements of postprocessing shaders, and many new or improved engine functions. A detailed list can be found here:

http://manual.3dgamestudio.net/newfeatures8.htm

Install the update over your Gamestudio 8.20 version. Please report any problems to the bug forum.