i am having weaird souds in music
 

every time i download music i get a weird echoing sound even if i try different song its not my sound card this never happend before!:confused:

Which player are you using to listen to the music? You might find you have an equaliser/FX preset on your player turned on.
Try the songs in another player & see if the same happens. AFAIK windows does have some audio FX in the audio section settings somewhere.