Cache album pics to mongo & listen url & check if track in db

rails/app/controllers/track_controller.rb

@@ -0,0 +1,11 @@
+class TrackController < ApplicationController
+  def listen
+    @track = TrackData.where(id: params[:id])
+    unless @track.empty?
+      out = {:status => 'ok', :data => @track.first.files.first[1]}
+    else
+      out = {:status => 'no_such_track'}
+    end
+    render :json => out
+  end
+end