The SoundMixer class contains static properties and methods for global
sound control in the application. The SoundMixer class controls embedded
and streaming sounds in the application. it does not control dynamically
created sounds (that is, sounds generated in response to a Sound object
The number of seconds to preload an embedded streaming sound into a
buffer before it starts to stream. The data in a loaded sound,
including its buffer time, cannot be accessed by a SWF file that is in
a different domain unless you implement a cross-domain policy file.
For more information about security and sound, see the Sound class
description. The data in a loaded sound, including its buffer time,
cannot be accessed by code in a file that is in a different domain
unless you implement a cross-domain policy file. However, in the
application sandbox in an AIR application, code can access data in
sound files from any source. For more information about security and
sound, see the Sound class description.
SoundMixer.bufferTime property only affects the buffer time for
embedded streaming sounds in a SWF and is independent of dynamically
created Sound objects (that is, Sound objects created in
ActionScript). The value of
SoundMixer.bufferTime cannot override or
set the default of the buffer time specified in the SoundLoaderContext
object that is passed to the
The SoundTransform object that controls global sound properties. A SoundTransform object includes properties for setting volume, panning, left speaker assignment, and right speaker assignment. The SoundTransform object used in this property provides final sound settings that are applied to all sounds after any individual sound settings are applied.
Determines whether any sounds are not accessible due to security
restrictions. For example, a sound loaded from a domain other than
that of the content calling this method is not accessible if the
server for the sound has no URL policy file that grants access to the
domain of that domain. The sound can still be loaded and played, but
low-level operations, such as getting ID3 metadata for the sound,
cannot be performed on inaccessible sounds.
For AIR application content in the application security sandbox,
calling this method always returns
false. All sounds, including
those loaded from other domains, are accessible to content in the
application security sandbox.
The string representation of the boolean.
Stops all sounds currently playing.
In Flash Professional, this method does not stop the playhead. Sounds
set to stream will resume playing as the playhead moves over the frames in which they are located.
When using this property, consider the following security model:
- By default, calling the
SoundMixer.stopAll()method stops only sounds in the same security sandbox as the object that is calling the method. Any sounds whose playback was not started from the same sandbox as the calling object are not stopped.
- When you load the sound, using the
load()method of the Sound class, you can specify a
contextparameter, which is a SoundLoaderContext object. If you set the
checkPolicyFileproperty of the SoundLoaderContext object to
true, Flash Player or Adobe AIR checks for a cross-domain policy file on the server from which the sound is loaded. If the server has a cross-domain policy file, and the file permits the domain of the calling content, then the file can stop the loaded sound by using the
SoundMixer.stopAll()method; otherwise it cannot.
However, in Adobe AIR, content in the
application security sandbox
(content installed with the AIR application) are not restricted by
these security limitations.
For more information related to security, see the Flash Player Developer Center Topic: <a href="http://www.adobe.com/go/devnet_security_en" scope="external">Security.