My mom used her Sony DSC-T7 and created some clips. She asked me to burn them on a DVD, so I put the clips together in iMovie and expected to make a simple transition to iDVD. After the .MPEG files were uploaded to iMovie, the audio is now missing. I rechecked the original files to see if the audio was missing but that's not the case. Anyone able to help me out here? I figured it would be an easy conversion for iMovie..