Thanks Mark,   What settings do you use for sound, on your computer, or anybody else who are feeling generous, maybe if you post your settings, ill might spot something . When i first started of with flt sim i didnt have any problems, but all of a sudden it went stupid, and im stuffed if i know why, that my friends is the frustrating part, and i hope to hell it doesnt happen to you guys, because its a real head scratcher. anyway thanks  take care    Jeff :-X