PE 15: MS updated my computer last night. I load a song mp3 and a recorded video into a movie I am

PE 15: MS updated my computer last night. I loaded a song mp3 and a recorded video into a movie I am was working on.  When I click on either and I get the little box and I click on the play arrrow the it "plays" but I get no sound.  If a export the movie the sound is on there.  But while working on making a movie with PE15 I try use get it lined up perfectly but sence it does play I can not edit it the way I might.

What do I do to get to hear music and video while in PS15.  (I have used this PE15 for over 4 years and made about 200 movies and it would always sound the music to me upto today.)   Please try to help