gistfile1.js

document.addEventListener('deviceready', deviceready, false);

var buttomDom;
var statusDom;
var fileSystem;

function deviceready() {
    console.log('dv ready');
  
	//step one is to request a file system	
	window.requestFileSystem(LocalFileSystem.TEMPORARY, 0, 
		function(fs) {
			fileSystem = fs;
	
			buttonDom = document.querySelector('#startDl');
			buttonDom.addEventListener('touchend', startDl, false);
			buttonDom.removeAttribute("disabled");
	
			statusDom = document.querySelector('#status');
		}, function(e) {
			alert('failed to get fs');
			alert(JSON.stringify(e));
		});
}

function startDl() {
    buttonDom.setAttribute("disabled","disabled");
	
    var ft = new FileTransfer();
    var uri = encodeURI("http://archive.org/download/Kansas_Joe_Memphis_Minnie-When_Levee_Breaks/Kansas_Joe_and_Memphis_Minnie-When_the_Levee_Breaks.mp3");

	var downloadPath = fileSystem.root.fullPath + "/download.mp3";

	ft.onprogress = function(progressEvent) {
		if (progressEvent.lengthComputable) {
			var perc = Math.floor(progressEvent.loaded / progressEvent.total * 100);
			statusDom.innerHTML = perc + "% loaded...";
		} else {
			if(statusDom.innerHTML == "") {
				statusDom.innerHTML = "Loading";
			} else {
				statusDom.innerHTML += ".";
			}
		}
	};
						
	ft.download(uri, downloadPath, 
	function(entry) {
		statusDom.innerHTML = "";
		var media = new Media(entry.fullPath, null, function(e) { alert(JSON.stringify(e));});
		media.play();
		
	}, 
	function(error) {
		alert('Crap something went wrong...');	
	});
		
	
}