Thank You all for your help ,problem now solved, thanks to you all for your ideas.
This how it was solved
Start>Control Panel>Sound>Playback>High light Speaker icon>Click>Properties>Enhancements>On the left side click off (Pitch shift Equalizer and any other squares that may have been clicked make sure that these are vacant squares).
Go to SETTINGS on the left side And adjust setting to zero the job is now done, hope this make sense to you again thanks aussie Lance