yea you can , just parsing the xml and get the link of the xml and using the media player in streaming the mp3
this tutorial help you
here how to parse xml
http://www.androidhive.info/2011/11/android-xml-parsing-tutorial/
media player and streaming http://www.helloandroid.com/tutorials/musicdroid-audio-player-part-i
http://blog.pocketjourney.com/2008/04/04/tutorial-custom-media-streaming-for-androids-mediaplayer/
http://blog.endpoint.com/2011/03/api-gaps-android-mediaplayer-example.html
http://androidstreamingtut.blogspot.com/2012/08/custom-progressive-audio-streaming-with.html