The streaming related methods retrieve audio files from locker storage.
http://content.mp3tunes.com/storage/lockerGet/<file key>?sid=<session id>&partner_token=<partner token>
parameters
A valid session id, received from the “login” method.
A Partner Token is used to uniquely identify and authenticate all entities using API's to communicate with MP3tunes.com. If you do not already have a partner token you may request one from the partner page.
This parameter specifies a transcoding format to be used. Currently mp3 is the only option supported.
The lockerGet method is used to retrieve audio files from a user's locker. "Streaming" is achieved through a progressive download using this method. Audio files will be retrieved in the same format in which they were uploaded unless the fileformat parameter is used. This method returns specific Response Headers which indicate success or failure.