Stream audio via UDP on Android

In this post, I tried to play small audio data chunks with audiotrack to show the feasibility of streaming audio. it's not straightforward enough. so I updated the sample code to actually transfer audio data with UDP.
As the image below shows, the application is not too complicated.

The two buttons will each create a new thread to send and Recv audio data respectively. and the sender will read audio data from the file/data/1.wav. it sends the data to UDP port 2048 on localhost. the specified er reads on 2048 port and feed data stored ed to audiotrack object.
Full code is available:
Http://code.google.com/p/rxwen-blog-stuff/source/browse/trunk/android/streaming_audio/src/rmd/media/StreamingAudio/UdpStream.java