You can't convert a Windows Movie Maker (MSWMM) file. All you have to do is Publish or Finish your project in the program. The publishing/finishing process automatically converts the file name extension (format) into Standard Viewing Format.
Make sure you have Published/Finished your Windows Movie Maker project file first. Once you have done that, download and install an audio converter on your computer. Use the converter to convert the .wma audio file (produced by Windows Movie Maker) into a .mp3.
A Windows Movie Maker project file is in .MSWMMformat.
A Windows Movie Maker project file is in .MSWMMformat.
You can't index a file for Windows Movie Maker.
You have to convert the file to a compatible format before you can import it into the program. Online, Google and download a free video/audio converter. Use the converter to convert your files to one of the file name extensions (formats) used by Windows Movie Maker.
You can't do that on Windows Live Movie Maker, but you can extract the audio from a video in Windows Movie Maker v2.6 and save/publish it as an audio file.
A Windows Movie Maker project file (MSWMM) can only be edited/viewed in the Windows Movie Maker program.A Windows Movie Maker movie/video file is the Finished/Published version of the project file which has been converted to a finished Standard Format for viewing.
Most likely because that file type is not supported in Windows Movie Maker
You can't choose the format type in Windows Movie Maker. Just publish or finish the video first. Then convert the .wmv file to whatever format you like with a video converter.
You can't play unsupported file extensions in Windows Movie Maker. You have to convert the file to a format compatible with the program.
You have to Publish the video first (that is exporting). The process changes the Windows Movie Maker file to a Standard viewing format (and not a project file).
.MSWMM