[REL] Sound Distance Boost

[WilhelmTell]

I always found that many sounds in SH4 should be hearable at a greater distance.
For example the explosion of a battleship's fuel bunker can barely be heard at a distance of 3000m and the AA-guns cannot be heard past 300m.

Thanks to skwasjer who made a useful summary of the content of the SH.sdl.(http://www.subsim.com/radioroom/showthread.php?t=121497) This brought me to take a closer look at the SH.sdl with a hex editor.
Since that time I have increased the sound radius of the following sounds:

• machine guns (AA guns and plane armament)
• all sizes of the ship's and sub's cannons
• torpedo impact and most explosions of ships and airplanes
• airplanes engines
• sub's diesel engines

If you are interested, you can try my modded SH.sdl .
You can download it here --> http://www.speedyshare.com/519612765.html
It's JSGME ready of course.

Fair comment is appreciated.