Flash .swf Not just an animation format, Flash streams PCM- or
MP3-compressed audio at various bit rates.
MP3 .mp3, .mp2 The MPEG Audio Layer 3 format features high-quality
digital audio files with excellent compression. MP3 has
become the standard for downloadable music. It plays
in QuickTime Player 4+, RealPlayer 6+, Windows
Media Player 5.2+, and a whole range of standalone
players that work as browser helper applications.
QuickTime .mov A QuickTime movie with a soundtrack only.
RealAudio .ra or .ram The audio component of RealNetworks??™ RealMedia.
Lots of players. Good quality at low bit rates, but not as
good as MP3.
Rich Music Format .rmf Beatnik??™s hybrid audio/music format. Samples are either
PCM or MP3 compressed.
Shockwave Audio .swa The audio component of Shockwave, they??™re low-bitrate
MP3 files with a different file header. They stream
over HTTP, and any MP3 player can play them locally.
WAV .wav Co-developed by Microsoft and IBM, this is the default
audio format for Windows. Uncompressed versions play
in browsers, but avoid using WAV files on the Web
whenever possible because of their large file sizes.
Windows Media .asf, .asx, .wma, .wmv Microsoft??™s streaming media solution.
Which audio format should you choose? That depends on a combination of factors, including your target
audience, available bandwidth, and the purpose of the audio content.
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