Wikipedia uses the Ogg Vorbis, FLAC and WAV formats for audio, as they are not encumbered by patents (an issue that prompted the decision that MP3 files will not be hosted at Wikipedia). Software supporting Vorbis exists for many platforms...
Various online tools (such as Zamzar) are available which let you freely convert one file format into another, and can be useful when you want to upload a file to Wikipedia.
This user provides information using userboxes because he or she is bored.
This user is a member of WikiProject Userboxes.
This WikiProject aims to organize, expand and improve all Wikipedia's userboxes. We want to make it easy for users to make their own, and to find others, as well as create a standard for all userboxes, including naming conventions and content standards.