[leofit]

Через RTMP официально невозможно получать сырые данные. В случае FMS используйте

Client.audioSampleAccess
clientObject.audioSampleAccess
Enables Flash Player to access raw, uncompressed audio data from streams in the specified folders.
Call the
SoundMixer.computeSpectrum()
method in client-side ActionScript 3.0 to read the raw sound data for a waveform that is currently playing. For more information, see the
SoundMixer.computeSpectrum()
entry in the ActionScript 3.0 Language and Components Reference and “Accessing raw sound data” in Programming ActionScript 3.0.
Availability
Flash Media Interactive Server 3 and Flash Media Development Server 3
Example
The following server-side code sets the
audioSampleAccess
directory to
publicdomain
:

Добавлено через 3 минуты
Пример из хелпа

 
application.onConnect = function(client) {
// Anyone can play free content, which is all streams placed under the
// samples/, publicdomain/ and contrib/ folders.
client.readAccess = "samples;publicdomain;contrib";
// Paying customers get to watch more streams.
if ( isPayingCustomer(client))
client.readAccess += "nonfree;premium";
// Content can be saved (user recorded streams) to contrib/ folder.
client.writeAccess = "contrib";
// Anyone can gain access to an audio snapshot of the publicdomain/ folder.
client.audioSampleAccess = "publicdomain";
// Paying customers can also get a video snapshot of the publicdomain/ folder.
if (isPayingCustomer(client))
client.videoSampleAccess = "publicdomain";
}