There are many different tools for working with audio, video and graphics files. The following, are tools that many of our subscribers find helpful:
Audacity - A free application to record high-quality audio files
GIMP - A free application to create and edit graphic files
HandBrake - A free / open source tool to convert and modify videos. Learn how to use HandBrake to reduce the size of a video.
Conversion - An online file type converter that supports a wide range of formats