title: Decode G711(PCM u-law)
body: <p>Please bear with me as my understanding of audio codec is limited. 
  I have this audio source from a IPCAM (through a htto//... CGI interface). 
  I am trying to write several client programs to play this audio source on Windows, MAC, as well as Android phone. The audio is encoded in G711 (PCM ulaw). </p>
  
  <p>Do I need to decode the PCM audio data to a raw audio data before I could pass it to the audio engine to play? If so, is there some sample code on how to decode it?
  I am confused as somehow I believe PCM is already RAW. Could I just feed it directly to the audio engine on Android for example?</p>
  
  <p>thanks much in advance</p>