I've had Sony Sound Forge 10 for quite a while and it's served me well. Recently, however, on playback the speed of the track increases without me doing anything. Not changing pitch, not changing time stretch. If I import a track and play it and it sounds fine, then I switch to another program without closing down Sound Forge; OR, for example, if I switch over to YouTube to listen to the same track without closing down Sound Forge, when I come back to Sound Forge the track plays back faster, and the pitch increases by a half or full tone. I'm still on Windows 7 Professional and have been forever. Anyone have any idea what I may have done to make this happen? Sure appreciate the help.