title: how to get informed of new song info while retrieving metadata from shoutcast stream
body: <p><strong>Background:</strong>
  I'm streaming radio using double buffering approach for html shoutcast. I get metadata information from stream using <a href="http://www.smackfu.com/stuff/programming/shoutcast.html" rel="nofollow">http://www.smackfu.com/stuff/programming/shoutcast.html</a></p>
  
  <p><strong>Problem</strong>
  I have three problems.<br>
  1- I already use a urlconnection and inputstream for listening radio. I don't want to open a new connection to retrieve metadata. But when I tried to get both from same inputstream, I couldn't listen radio anymore. I guess this is not possible and I have to use two seperate connection? Isn't it bad for performance?</p>
  
  <p>2- When the application started, I retrieve the info of the current song. No problem. However how do I get informed when the song changes. It is said that server will send information when the song changes. But I'm starting the URLconnection, get the input stream, retrieve the metadata and close the connection. I couldn't understand how should I informed by the server? Should I keep the connection open?</p>
  
  <p>3- And last question. AFAIK progressive streaming isn't possible before android 2.2. Is this true just for http? If the protocol was rtsp, could I make progressive streaming before android 2.2? Anyone please make it certain and clear?</p>
  
  <p>Thanks a lot,</p>