Hi @allsorry, but english is not my own language... hope you can understanding.. :-)this gauge is only for FS9 ...i created a gauge in c (MSVC) and now i want to add a sound on it..i try to add it with FSSound.dll.declaration:// variables/definitions for the sound buffers:// a sound buffer used to demonstrate the various effectsMFSSoundFileVars(main_sound, "SOUNDtower.wav");case PANEL_SERVICE_POST_INSTALL:// a sound buffer must be registered before it can be played back MFSSoundFileRegister(main_sound); break;case PANEL_SERVICE_PRE_KILL:// never forget to unregister the sound buffers MFSSoundUnregister(main_sound); break;but the FS9 crashed after loading the aircraft and init gauge :((can anybody help me an give me an example to add a sound (located in Sounds/...wav) ? thanks for any helpsregards Norman

Get DxSound.zip here: http://splashclub.org/jcboliveira/source/DxSound.zipHope that helps you.Patrick