For no apparent reason,I have lost a number of engine sounds from my flightsim 2004.No other sounds were affected. The aircaft involved were all of the Boeing fleet,Bell206 Lear Jet,Mooney and Extra. I de installed and reinstalled but the situation was the same. I manually repeated the proceedure using the SEARCH method. Finally I installed "System Mechanic" and let it loose to suck out all the garbage files Guess What! Not a sausage. I have repeated the exercise a dozen times but can't find my engine noises. I'm running win98 on an IBM Aptiva pentium3 667mhz with 256 ram Does anyone Know what I'm doing wrong? Cheers to all skudrox44

There's a good chance that your problem is related to the audio CODECS in Windows. These are utilities to COmpress and DECompress audio files within the multimedia part of the OS. They are NOT a part of Flight Simulator.The solution is to Uninstall and Reinstall the CODECS. The procedure I used a few years back came from the Microsoft Knowledge Base for Win98. My missing engine sounds were restored to normal!Search the Knowledge Base for Q177252. The title of the item is "Flight Simulator: No Instructor, Pilot, or ATC Voices ... ". Other symptoms include "no engine sounds".Good luck. Let us know if this works for you.Regards,JerryH