There are no Winamp files, this is what i'm trying to tell you.
Your audio/video files are associated with Winamp. If it is a video file you may check it with
GSpot and see what codec(s)/filter(s)... needs in order to be opened with
Windows Movie Maker. However, your file may be
unsupported by Windows Movie Maker. In this case, you have to convert the file.
Here is a list with
File formats supported by Windows Movie Maker.