Implement tracks/{show,listen}

app/controllers/tracks_controller.rb

@@ -0,0 +1,8 @@
+class TracksController < ApplicationController
+  def show
+    @track = Track.find params[:id]
+  end
+
+  def stream
+  end
+end

app/models/track.rb

@@ -0,0 +1,3 @@
+class Track < ActiveRecord::Base
+  validates_presence_of :name
+end

app/views/tracks/show.html.haml

@@ -0,0 +1,3 @@
+%h1= @track.name
+%audio{:src => stream_track_path(@track)}
+  Your browser does not support the audio element