diff --git a/admin/app/models/cohort.rb b/admin/app/models/cohort.rb
index 78751305d..2b72a3936 100644
--- a/admin/app/models/cohort.rb
+++ b/admin/app/models/cohort.rb
@@ -149,9 +149,8 @@ SELECT played.player_id FROM
   (SELECT player_id, COUNT(*) cnt FROM playable_plays pp
     WHERE 
       pp.created_at >= '#{start_date}' AND 
-      pp.created_at <= '#{end_date}' AND 
-      pp.jam_track_id IS NOT NULL /* VRFS-2916 jam_tracks.id is varchar: REMOVE */
-      /* pp.playable_type = 'JamRuby::JamTrack' */  /* VRFS-2916 jam_tracks.id is varchar: ADD */
+      pp.created_at <= '#{end_date}' AND
+      pp.playable_type = 'JamRuby::JamTrack'  /* VRFS-2916 jam_tracks.id is varchar: ADD */
      GROUP BY player_id
   ) played
 WHERE #{where}
@@ -274,9 +273,9 @@ SQL
     
     count = _subquery(assoc_key = :jam_tracks_played, num_user) do |subsql|
       # VRFS-2916 jam_tracks.id is varchar: REMOVE
-      subsql += " AND tt.jam_track_id IS NOT NULL "
+      # subsql += " AND tt.jam_track_id IS NOT NULL "
       # VRFS-2916 jam_tracks.id is varchar: ADD
-      # subsql += " AND tt.playable_type = 'JamRuby::JamTrack' "
+      subsql += " AND tt.playable_type = 'JamRuby::JamTrack' "
     end
     _put_data_set(assoc_key, count, num_user)
 
diff --git a/db/manifest b/db/manifest
index dbc9dc3a0..4fda5d21b 100755
--- a/db/manifest
+++ b/db/manifest
@@ -267,4 +267,5 @@ cohorts.sql
 jam_track_right_admin_purchase.sql
 jam_track_playable_plays.sql
 shopping_cart_anonymous.sql
-user_reuse_card_and_reedem.sql
\ No newline at end of file
+user_reuse_card_and_reedem.sql
+jam_track_id_to_varchar.sql
\ No newline at end of file
diff --git a/db/up/jam_track_id_to_varchar.sql b/db/up/jam_track_id_to_varchar.sql
new file mode 100644
index 000000000..9a2c0cdfd
--- /dev/null
+++ b/db/up/jam_track_id_to_varchar.sql
@@ -0,0 +1,25 @@
+-- change jam_tracks PRIMARY KEY to VARCHAR(64)
+
+-- first, drop all constraints and change the types
+ALTER TABLE jam_track_tracks DROP CONSTRAINT jam_track_tracks_jam_track_id_fkey;
+ALTER TABLE jam_track_tracks ALTER COLUMN jam_track_id TYPE VARCHAR(64);
+ALTER TABLE jam_track_tap_ins DROP CONSTRAINT jam_track_tap_ins_jam_track_id_fkey;
+ALTER TABLE jam_track_tap_ins ALTER COLUMN jam_track_id TYPE VARCHAR(64);
+ALTER TABLE jam_track_rights DROP CONSTRAINT jam_track_rights_jam_track_id_fkey;
+ALTER TABLE jam_track_rights ALTER COLUMN jam_track_id TYPE VARCHAR(64);
+ALTER TABLE active_music_sessions ALTER COLUMN jam_track_id TYPE VARCHAR(64);
+ALTER TABLE recordings DROP CONSTRAINT recordings_jam_track_id_fkey;
+ALTER TABLE recordings ALTER COLUMN jam_track_id TYPE VARCHAR(64);
+ALTER TABLE playable_plays DROP COLUMN jam_track_id;
+
+
+-- then drop the jamtrack sequence, change it's type, and then set default to UUID
+-- DROP SEQUENCE jam_tracks_next_seq;
+ALTER TABLE jam_tracks ALTER COLUMN id TYPE VARCHAR(64);
+ALTER TABLE jam_tracks ALTER COLUMN id SET DEFAULT uuid_generate_v4();
+
+-- add back in all the constraints on the fk tables
+ALTER TABLE jam_track_tracks ADD CONSTRAINT jam_track_tracks_jam_track_id_fkey FOREIGN KEY (jam_track_id) REFERENCES jam_tracks(id) ON DELETE CASCADE;
+ALTER TABLE jam_track_tap_ins ADD CONSTRAINT jam_track_tap_ins_jam_track_id_fkey FOREIGN KEY (jam_track_id) REFERENCES jam_tracks(id) ON DELETE CASCADE;
+ALTER TABLE jam_track_rights ADD CONSTRAINT jam_track_rights_jam_track_id_fkey FOREIGN KEY (jam_track_id) REFERENCES jam_tracks(id);
+ALTER TABLE recordings ADD CONSTRAINT recordings_jam_track_id_fkey FOREIGN KEY (jam_track_id) REFERENCES jam_tracks(id);
diff --git a/ruby/lib/jam_ruby/models/jam_track.rb b/ruby/lib/jam_ruby/models/jam_track.rb
index 1301c03bf..382ad9473 100644
--- a/ruby/lib/jam_ruby/models/jam_track.rb
+++ b/ruby/lib/jam_ruby/models/jam_track.rb
@@ -56,9 +56,9 @@ module JamRuby
     has_many :recordings, :class_name => "JamRuby::Recording"
 
     # VRFS-2916 jam_tracks.id is varchar: REMOVE
-    has_many :plays, :class_name => "JamRuby::PlayablePlay", :foreign_key => :jam_track_id, :dependent => :destroy
+    # has_many :plays, :class_name => "JamRuby::PlayablePlay", :foreign_key => :jam_track_id, :dependent => :destroy
     # VRFS-2916 jam_tracks.id is varchar: ADD
-    # has_many :plays, :class_name => "JamRuby::PlayablePlay", :as => :playable, :dependent => :destroy
+     has_many :plays, :class_name => "JamRuby::PlayablePlay", :as => :playable, :dependent => :destroy
 
     accepts_nested_attributes_for :jam_track_tracks, allow_destroy: true
     accepts_nested_attributes_for :jam_track_tap_ins, allow_destroy: true
diff --git a/ruby/lib/jam_ruby/models/playable_play.rb b/ruby/lib/jam_ruby/models/playable_play.rb
index 148e672ea..a04018689 100644
--- a/ruby/lib/jam_ruby/models/playable_play.rb
+++ b/ruby/lib/jam_ruby/models/playable_play.rb
@@ -4,20 +4,20 @@ module JamRuby
 
     belongs_to :playable, :polymorphic => :true
     # VRFS-2916 jam_tracks.id is varchar: REMOVE
-    belongs_to :jam_track, :foreign_key => :jam_track_id
+    #belongs_to :jam_track, :foreign_key => :jam_track_id
     belongs_to :user, :class_name => "JamRuby::User", :foreign_key => "player_id"
     belongs_to :claimed_recording, :class_name => "JamRuby::ClaimedRecording", :foreign_key => "claimed_recording_id"
 
     validate do
       # VRFS-2916 jam_tracks.id is varchar: REMOVE
-      if !playable_id && !jam_track_id
-        self.errors[:base] << 'No playable instance detected'
-      end
+      #if !playable_id && !jam_track_id
+      #  self.errors[:base] << 'No playable instance detected'
+      #end
 
       # VRFS-2916 jam_tracks.id is varchar: ADD
-      # if !playable_id
-      #   self.errors[:base] << 'No playable instance detected'
-      # end
+      if !playable_id
+         self.errors[:base] << 'No playable instance detected'
+       end
 
       if !user
         self.errors[:base] << 'No user detected'
diff --git a/ruby/lib/jam_ruby/models/shopping_cart.rb b/ruby/lib/jam_ruby/models/shopping_cart.rb
index adcff537a..b2bbc13ce 100644
--- a/ruby/lib/jam_ruby/models/shopping_cart.rb
+++ b/ruby/lib/jam_ruby/models/shopping_cart.rb
@@ -77,7 +77,7 @@ module JamRuby
 
         duplicate_found = false
         any_user.shopping_carts.each do |shopping_cart|
-          if shopping_cart.cart_type == JamTrack::PRODUCT_TYPE && shopping_cart.cart_id.to_i == jam_track.id
+          if shopping_cart.cart_type == JamTrack::PRODUCT_TYPE && shopping_cart.cart_id == jam_track.id
             duplicate_found = true
             return
           end
diff --git a/ruby/lib/jam_ruby/models/user.rb b/ruby/lib/jam_ruby/models/user.rb
index fc725c59b..6b0861d03 100644
--- a/ruby/lib/jam_ruby/models/user.rb
+++ b/ruby/lib/jam_ruby/models/user.rb
@@ -72,9 +72,9 @@ module JamRuby
     has_many :playing_jam_tracks, :class_name => "JamRuby::ActiveMusicSession", :inverse_of => :jam_track_initiator
 
     # VRFS-2916 jam_tracks.id is varchar: REMOVE 
-    has_many :jam_tracks_played, :class_name => "JamRuby::PlayablePlay", :foreign_key => 'player_id', :conditions => "jam_track_id IS NOT NULL"
+    # has_many :jam_tracks_played, :class_name => "JamRuby::PlayablePlay", :foreign_key => 'player_id', :conditions => "jam_track_id IS NOT NULL"
     # VRFS-2916 jam_tracks.id is varchar: ADD
-    # has_many :jam_tracks_played, :class_name => "JamRuby::PlayablePlay", :foreign_key => 'player_id', :conditions => ["playable_type = 'JamRuby::JamTrack'"]
+    has_many :jam_tracks_played, :class_name => "JamRuby::PlayablePlay", :foreign_key => 'player_id', :conditions => ["playable_type = 'JamRuby::JamTrack'"]
 
     # self.id = user_id in likes table
     has_many :likings, :class_name => "JamRuby::Like", :inverse_of => :user, :dependent => :destroy
diff --git a/ruby/spec/factories.rb b/ruby/spec/factories.rb
index 418399a8f..8840412ec 100644
--- a/ruby/spec/factories.rb
+++ b/ruby/spec/factories.rb
@@ -584,6 +584,8 @@ FactoryGirl.define do
   end
 
   factory :playable_play, :class => JamRuby::PlayablePlay do
+
+    association :user,           factory: :user
   end
 
   factory :recording_like, :class => JamRuby::RecordingLiker do
diff --git a/ruby/spec/jam_ruby/models/jam_track_right_spec.rb b/ruby/spec/jam_ruby/models/jam_track_right_spec.rb
index 9a99b731f..530535f8c 100644
--- a/ruby/spec/jam_ruby/models/jam_track_right_spec.rb
+++ b/ruby/spec/jam_ruby/models/jam_track_right_spec.rb
@@ -98,7 +98,7 @@ describe JamTrackRight do
     end
 
     it "bogus key" do
-      JamTrackRight.list_keys(user, [2112]).should eq([])
+      JamTrackRight.list_keys(user, ['2112']).should eq([])
     end
 
     it "valid track with no rights to it by querying user" do
diff --git a/ruby/spec/jam_ruby/models/jam_track_spec.rb b/ruby/spec/jam_ruby/models/jam_track_spec.rb
index d03cf13fe..10cec40cd 100644
--- a/ruby/spec/jam_ruby/models/jam_track_spec.rb
+++ b/ruby/spec/jam_ruby/models/jam_track_spec.rb
@@ -20,9 +20,9 @@ describe JamTrack do
       play = PlayablePlay.new
 
       # VRFS-2916 jam_tracks.id is varchar: REMOVE
-      play.jam_track = @jam_track
+      # play.jam_track = @jam_track
       # VRFS-2916 jam_tracks.id is varchar: ADD
-      # play.playable = @jam_track
+      play.playable = @jam_track
 
       play.user = user
       play.save!
diff --git a/web/app/controllers/api_jam_tracks_controller.rb b/web/app/controllers/api_jam_tracks_controller.rb
index 5be70e52f..f1b4264fa 100644
--- a/web/app/controllers/api_jam_tracks_controller.rb
+++ b/web/app/controllers/api_jam_tracks_controller.rb
@@ -23,9 +23,9 @@ class ApiJamTracksController < ApiController
     play.ip_address = request.remote_ip
     
     # VRFS-2916 jam_tracks.id is varchar: REMOVE
-    play.jam_track = JamTrack.where(id: params[:id].to_i).first
+    # play.jam_track = JamTrack.where(id: params[:id].to_i).first
     # VRFS-2916 jam_tracks.id is varchar: ADD
-    # play.playable = JamTrack.where(id: params[:id]).first
+    play.playable = JamTrack.where(id: params[:id]).first
 
     play.save
 
diff --git a/web/app/views/api_jam_tracks/show.rabl b/web/app/views/api_jam_tracks/show.rabl
index 278700e17..c93345b02 100644
--- a/web/app/views/api_jam_tracks/show.rabl
+++ b/web/app/views/api_jam_tracks/show.rabl
@@ -7,7 +7,7 @@ node :genres do |item|
 end
 
 node :added_cart do |item|
-  any_user.shopping_carts.where("cart_id='?'",item.id).count != 0
+  any_user.shopping_carts.where(cart_id: item.id).count != 0
 end
 
 child(:jam_track_tracks => :tracks) {
diff --git a/web/spec/controllers/api_jam_tracks_controller_spec.rb b/web/spec/controllers/api_jam_tracks_controller_spec.rb
index 82208c887..e70578564 100644
--- a/web/spec/controllers/api_jam_tracks_controller_spec.rb
+++ b/web/spec/controllers/api_jam_tracks_controller_spec.rb
@@ -15,6 +15,7 @@ describe ApiJamTracksController do
   end
 
   before(:each) do
+    JamTrackRight.destroy_all
     JamTrack.destroy_all
     @user = FactoryGirl.create(:user)
     @jam_track = FactoryGirl.create(:jam_track)
@@ -120,7 +121,6 @@ describe ApiJamTracksController do
 
   describe "with a JamTrack" do
     before(:each) do
-      JamTrackRight.destroy_all
       # Create a working JamTrack for these tests.  The integrity
       # of this process is checked in other tests:
       @ogg_path = File.join('spec', 'files', 'on.ogg')
diff --git a/web/spec/features/jamtrack_shopping_spec.rb b/web/spec/features/jamtrack_shopping_spec.rb
index 76b9ae5a9..d387c44a6 100644
--- a/web/spec/features/jamtrack_shopping_spec.rb
+++ b/web/spec/features/jamtrack_shopping_spec.rb
@@ -17,6 +17,7 @@ describe "JamTrack Shopping", :js => true, :type => :feature, :capybara_feature
 
   before(:each) do
     ShoppingCart.delete_all
+    JamTrackRight.delete_all
     JamTrack.delete_all
     JamTrackTrack.delete_all
     JamTrackLicensor.delete_all