ticket #153: fixed the test conditions

the test on 'probably' in the second loop can safely be removed, since
anyway we will stop at the first one if any of the codec can 'probably'
be played

src/audio/audio.js

@@ -84,14 +84,12 @@
 					}
 				}
 				// loop again and check for all the rest ('maybe')
-				ext = "";
 				i = 0;
 				for (; i < len; i++) {
 					ext = requestedFormat[i].toLowerCase().trim();
 					// check extension against detected capabilities
 					if (obj.capabilities[ext] && 
-						obj.capabilities[ext].canPlay) 
-						obj.capabilities[ext].canPlayType !== 'probably') {
+						obj.capabilities[ext].canPlay) {
 						result = ext;
 						break;
 					}