Conversion of veg files to mp3 file format

You cannot  convert .veg files (Sony Vegas) to MP3, or any other multimedia format for that matter. You will need to render the video in Vegas and not save it as project. Once you have the video, you would then need to extract the audio track - if it's even present in the video. But in most cases, this procedure most likely won't work at all.

Open VEG file    Open MP3 file