i downloaded a dauph helo file the other day. it came without a sound file. it said the cut and paste a sound file from the bell helo and put it in the dauph aircraft folder....which i did, and that worked. However, i also downloaded a custom sound file and tried putting it in the sound folder...but no sound happened when i select the aircraft in flight sim. i've tried a dozen different ways of putting the sound in the folder....still nothing. the new sound files DO work. i can click on them and hear them play in media player. any suggestions.