Rebuilding audio player and handling playback sessions in android. Moving all logic natively

plugins/constants.js

@@ -15,10 +15,18 @@ const BookCoverAspectRatio = {
   SQUARE: 1
 }
 
+const PlayMethod = {
+  DIRECTPLAY: 0,
+  DIRECTSTREAM: 1,
+  TRANSCODE: 2,
+  LOCAL: 3
+}
+
 const Constants = {
   DownloadStatus,
   CoverDestination,
-  BookCoverAspectRatio
+  BookCoverAspectRatio,
+  PlayMethod
 }
 
 export default ({ app }, inject) => {