That is, add some silence to the end of the MP3 with say Audacity or your audio editor?
Sony Vegas was many hundred bucks and maybe you should call it in.
I just recently noticed the audio within Vegas goes to zero right at the end of a song. You can see in the clip that the audio meter at the right goes to zero for about a second before the song ends. It does this between every song although I only showed two in the video. I tried using different flac and mp3 files and i also tried old vegas projects and I still had the same issue. I also tried uninstalling and reinstalling Vegas with no luck. Any help would be greatly appreciated. Here's a link showing the problem: https://www.youtube.com/watch?v=X6mOZz_r17s

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