I am having a WMV file and I just want its audio. This means that I want to remove only the video part of it. I need to do this to make the audio as the ringtone of my phone. So, basically I need someone to provide information on how to demux WMV file. Is there any software that will help me in this case? I am using Windows 7 operating system with 4 GB RAM and Corei7 processor. I am waiting for suitable replies and suggestions.