Sound: added channel recycling.

Added sound channel count (aka voices) user option.
Added 3DPB font to sprite viewer.
Added version number to about dialog.

SpaceCadetPinball/loader.cpp

@@ -331,7 +331,7 @@ float loader::play_sound(int soundIndex)
 {
 	if (soundIndex <= 0)
 		return 0.0;
-	Sound::PlaySound(sound_list[soundIndex].WavePtr, 0, 7, 0, 0);
+	Sound::PlaySound(sound_list[soundIndex].WavePtr, pb::time_ticks);
 	return sound_list[soundIndex].Duration;
 }