Question: I know this is a quite odd question, and I don't really know how to provide more elements to help you find a question. All I can say is that, suddenly, every window that has the chance to maximize itself will start maximized. One of the many examples is Chrome's preferences window, that should be a fairly small window but opens at full screen (1920x1080). Do someone have a clue?

Please help me in finding some more elements to get a proper solution.

Answer: 
Remapping the Video Stream to match the Audio Stream: Introduction
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Many years ago, I made a rendered architectural fly-through animation (part of an university group project) where we used [Adobe Premiere](http://www.adobe.com/products/premiere/) and [**Adobe After Effects**](http://www.adobe.com/products/aftereffects/), to edit and manipulate rendered clips that we made in [3DS Max](http://usa.autodesk.com/3ds-max/) to fit to the beats and changes of some [German trance music](http://www.der-dritte-raum.de/). It worked out very well. Another group used [**Sony Vegas**](http://www.sonycreativesoftware.com/vegaspro) to do something similar.

These programs are expensive, but they are industry standard tools and skills in using them are highly valued by employers in relevant fields. There are trial versions which will give you enough time to do what you want to do.

It would be much better to slow down and speed up parts of the video to fit the music, rather than the other way around, as changing the tempo of the music will sound totally wrong, where as it will be unnoticeable visually, as long as it is only a *slight* variation. 

Remapping the Video Stream to match the Audio Stream: Procedure
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There are loads of tutorials on the internet. Here are a couple which I found from a quick search:

[Time remapping in Adobe After Effects](http://library.creativecow.net/articles/preston_bryan/time_remapping.php) (this is for an old version of After Effects, but I doubt that the technique would have changed much since, although there may be new tools now which makes the process easier)

[Time syncing video to music in Sony Vegas](http://www.youtube.com/watch?v=az7PIkc8Xkw) (YouTube Video)
Remapping the Audio Stream to match the Video Stream.
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For modifying the audio stream there is a program called Audacity that works well. You should be able to download it, and select the portion of song you want speed up or slow down to implement the changes.

Remember to download the [LAME MP3 encoder](http://lame.sourceforge.net/) as well if you want to be able to export the file as an `.mp3`.