Normalising / Adjusting WMV audio volume?

[gt123]

Hi there,

I have a batch of around 500 windows media video files and some of these have rather low audio volume when compared to the others. Is there an application I can use to normalise the volumes across an entire folder of wmvs? or alternatively, an application that can be used to alter the volume of individual wmv files?

Thank you,

GT

[litlewiki]

You have that option in Winamp where you can increase/boost the volume .Also there is an app called mp3gain but that can only increase for mp3 and aac files.You can try recoding them to mp3 and try this s/w.
here's the project link
http://sourceforge.net/projects/mp3gain

[gt123]

WMV files are not exclusively audio though, they are video files. I need to increase the volume of the audio within these video files. Is WinAmp able to do this?