WinFlash supports a wide range of the most popular file formats for adding graphics, sound or video clips to your files. This section of the help file lists the supported file formats' most common extensions - for help in actually adding these files to your files, see the Bring On The Multi-media!! section of the Step-by-step Tutorial.
To learn about creating your own original sound files for use with your files, see Recording Your Own Sound Files.
Graphics Files
.bmp
.cms
.gif
.ico
.jpg
.pcx
.png
.scm
.wmf
Sound Files
.aif
.aiff
.au
.mid
.mp2
.mp3
.mpa
.rmi
.snd
.wav
RealAudio™ 4.0
Video Files
.avi
.mov
.mpe
.mpeg
.mpg
.qt
RealVideo™ 4.0
Page url: http://www.openwindow.com/helpfile/multimedia_file_formats.htm