31.10. Summary

• The sound system is made up of several classes that work together. The Flash Player event framework is used to communicate the status of sounds loading and playing.

• A Sound object contains the sound data and loads and streams sound files. SoundChannel is a handle on the audio output from a Sound object. The SoundMixer controls the overall output of all the sounds, and SoundTransform controls how sounds are mixed.

• Sounds can be embedded, loaded from local files, or streamed from external files over the internet.

• ID3 data contains detailed metadata about an MP3 song, such as artist, genre, and song name. Access this information through a sound's id3 property.

• You can sample audio as a waveform or a frequency spectrum to enable audio visualizations.

• In Flash Player 10 and up, you can extract, modify, and generate audio as it is playing.