Hi,The problem of the incompatible Fssound.dll is not removed when I replace the V 1.6.0.0 by the 1.5.0.2 downloaded as explained in a precedent topic.If I accept do not load this dll, another problem rises when I want to load the B-25. The eror message is :"FS has not been able to load GaugesMaam_B25.gau":-hmmm Thank you for your helpBye

Jo,When the FSSound.dll error message appears you must answer "Yes" to load the dll. Answering "No" will not allow the Maam_B25.gau to load.Better yet, to get rid of these messages and errors altogether add these lines to your FS9.cfg file.[Oldmodules] <-- If this section header already existsfssound.dll=1 <-- only add this lineFred

Thank you very much fred,I have overwrited the fssound.dll in the FS9 modules folder, and I have added your two right lines in the FS9.cfg, and now everything is OK.Bye and have very nice flights.