Sound loops after burning

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Hi!

I am trying to burn a DVD containing 2 Movies. Each has 1 Video-File (m2v) and 2 separate audio-files (mpa) and is about 2 h long.

With the first movie everything works fine. But with the second movie the audio-track loops every 2 minutes, so that wherever I am in the movie I can only hear something anywhere in between the first two minutes. Same problem with both audio tracks. Video plays fine.

This problem only occurs after burning. In the built-in simulator the audio tracks play quite well.

Please Help!

added: multiplexing the movie bevore importing it to DVD Power Tools helped. But it's not a proper solution.