diff --git a/ruby/lib/jam_ruby/app/uploaders/jam_track_track_uploader.rb b/ruby/lib/jam_ruby/app/uploaders/jam_track_track_uploader.rb
index 9defe1099..d2a80ce3d 100644
--- a/ruby/lib/jam_ruby/app/uploaders/jam_track_track_uploader.rb
+++ b/ruby/lib/jam_ruby/app/uploaders/jam_track_track_uploader.rb
@@ -23,6 +23,12 @@ class JamTrackTrackUploader < CarrierWave::Uploader::Base
   end
 
   def filename
-    "#{model.store_dir}/#{model.filename}" if model.id
+    if model.id
+      if mounted_as==:url_48
+        "#{model.store_dir}/#{model.filename}"      
+      else
+        "#{model.store_dir}/#{mounted_as}/#{model.filename}"       
+      end
+    end    
   end
 end
diff --git a/ruby/lib/jam_ruby/jam_tracks_manager.rb b/ruby/lib/jam_ruby/jam_tracks_manager.rb
index 81a1b7b4e..cf7ed79c7 100644
--- a/ruby/lib/jam_ruby/jam_tracks_manager.rb
+++ b/ruby/lib/jam_ruby/jam_tracks_manager.rb
@@ -12,13 +12,13 @@ module JamRuby
     @@log = Logging.logger[JamTracksManager]
 
     class << self
-      def save_jam_track_jkz(user, jam_track)
+      def save_jam_track_jkz(user, jam_track, bitrate=48)
         jam_track_right = jam_track.right_for_user(user)
         raise ArgumentError if jam_track_right.nil?
-        save_jam_track_right_jkz(jam_track_right)
+        save_jam_track_right_jkz(jam_track_right, bitrate)
       end
 
-      def save_jam_track_right_jkz(jam_track_right)
+      def save_jam_track_right_jkz(jam_track_right, bitrate=48)
         jam_track = jam_track_right.jam_track
         #py_root = File.expand_path(File.join(File.dirname(__FILE__), "..", "..", "..", "..", "jamtracks"))
         py_root = APP_CONFIG.jamtracks_dir
@@ -31,7 +31,7 @@ module JamRuby
             # use the jam_track_track ID as the filename.ogg/.wav, because it's important metadata
             nm = jam_track_track.id + File.extname(jam_track_track.filename)
             track_filename = File.join(tmp_dir, nm)
-            track_url = jam_track_track.sign_url
+            track_url = jam_track_track.sign_url(120, bitrate)
             copy_url_to_file(track_url, track_filename)
             copy_url_to_file(track_url, File.join(".", nm))
             jam_file_opts << " -i '#{track_filename}+#{jam_track_track.part}'"
@@ -54,11 +54,14 @@ module JamRuby
             #puts "stdout: #{out}, stderr: #{err}"
             raise ArgumentError, "Error calling python script: #{err}" if err.present?
             raise ArgumentError, "Error calling python script: #{out}" if out && (out.index("No track files specified") || out.index("Cannot find file"))
-            jam_track_right[:url]
-
+            
             #raise ArgumentError, "output_jkz is empty #{output_jkz}" unless File.exists?(output_jkz)
-
-            jam_track_right.url_48.store!(File.open(output_jkz, "rb"))
+            if bitrate==48
+              jam_track_right.url_48.store!(File.open(output_jkz, "rb"))
+            else
+              jam_track_right.url_44.store!(File.open(output_jkz, "rb"))
+            end
+            
             jam_track_right.signed=true
             jam_track_right.downloaded_since_sign=false
             jam_track_right.private_key=File.read("#{tmp_dir}/skey.pem")
diff --git a/ruby/lib/jam_ruby/models/jam_track.rb b/ruby/lib/jam_ruby/models/jam_track.rb
index 3fb7fabdd..557316541 100644
--- a/ruby/lib/jam_ruby/models/jam_track.rb
+++ b/ruby/lib/jam_ruby/models/jam_track.rb
@@ -114,7 +114,7 @@ module JamRuby
       jam_track_rights.where("user_id=?", user).first      
     end    
 
-    def self.list_downloads(user, limit = 100, since = 0)
+    def self.list_downloads(user, limit = 100, since = 0, bitrate = 48)
       since = 0 unless since || since == '' # guard against nil
       downloads = []
 
@@ -122,16 +122,23 @@ module JamRuby
         .limit(limit)
         .where('jam_track_rights.id > ?', since)
       .each do |jam_track_right|    
-        downloads << {
+        download = {
           :type => "jam_track",
           :id => jam_track_right.id.to_s,
           :jam_track_id => jam_track_right.jam_track_id,
-          :length => jam_track_right.length_48,
-          :md5 => jam_track_right.md5_48,
-          :url => jam_track_right.url_48,
           :created_at => jam_track_right.created_at,
           :next => jam_track_right.id
         }
+        if(bitrate==48)
+          download[:length] = jam_track_right.length_48
+          download[:md5] = jam_track_right.md5_48
+          download[:url] = jam_track_right.url_48                    
+        else
+          download[:length] = jam_track_right.length_44
+          download[:md5] = jam_track_right.md5_44
+          download[:url] = jam_track_right.url_44          
+        end
+        downloads << download
       end
       
       next_id = downloads[-1][:next] if downloads.length > 0
diff --git a/ruby/lib/jam_ruby/models/jam_track_right.rb b/ruby/lib/jam_ruby/models/jam_track_right.rb
index e113670b5..094339e27 100644
--- a/ruby/lib/jam_ruby/models/jam_track_right.rb
+++ b/ruby/lib/jam_ruby/models/jam_track_right.rb
@@ -62,12 +62,17 @@ module JamRuby
       else
         raise "Error sending notification #{self.errors}"
       end
-
     end
-    def finish_sign(length, md5)
+
+    def finish_sign(length, md5, bitrate)
       self.last_signed_at = Time.now
-      self.length = length
-      self.md5 = md5
+      if bitrate==48
+        self.length_48 = length
+        self.md5_48 = md5
+      else
+        self.length_44 = length      
+        self.md5_44 = md5
+      end
       self.signed = true
       self.error_count = 0
       self.error_reason = nil
@@ -91,30 +96,41 @@ module JamRuby
 
     def delete_s3_files
       remove_url_48!      
+      remove_url_44!      
     end
 
-    def enqueue
+    def enqueue(bitrate=48)
       begin
         JamTrackRight.where(:id => self.id).update_all(:signing_queued_at => Time.now, :signing_started_at => nil, :last_signed_at => nil)
-        Resque.enqueue(JamTracksBuilder, self.id)
+        Resque.enqueue(JamTracksBuilder, self.id, bitrate: bitrate)
         true
       rescue Exception => e
+        puts "e: #{e}"
         # implies redis is down. we don't update started_at by bailing out here
         false
       end
     end
 
     # if the job is already signed, just queued up for signing, or currently signing, then don't enqueue... otherwise fire it off
-    def enqueue_if_needed
+    def enqueue_if_needed(bitrate=48)
       state = signing_state
-
       if state == 'SIGNED' || state == 'SIGNING' || state == 'QUEUED'
         false
       else
-        enqueue
+        enqueue(bitrate)
         true
       end
     end
+
+    # @return true if signed && file exists for the bitrate specifed:
+    def ready?(bitrate=48)
+      if bitrate==48
+        self.signed && self.url_48.present? && self.url_48.file.exists?
+      else
+        self.signed && self.url_44.present? && self.url_44.file.exists?
+      end
+    end
+
     # returns easy to digest state field
     # SIGNED - the package is ready to be downloaded
     # ERROR - the package was built unsuccessfully
diff --git a/ruby/lib/jam_ruby/resque/jam_tracks_builder.rb b/ruby/lib/jam_ruby/resque/jam_tracks_builder.rb
index 6d352dece..f60d1f26b 100644
--- a/ruby/lib/jam_ruby/resque/jam_tracks_builder.rb
+++ b/ruby/lib/jam_ruby/resque/jam_tracks_builder.rb
@@ -7,7 +7,7 @@ require 'digest/md5'
 module JamRuby
   class JamTracksBuilder
     extend JamRuby::ResqueStats
-
+    attr_accessor :bitrate
     @queue = :jam_tracks_builder
 
     def log
@@ -16,9 +16,10 @@ module JamRuby
 
     attr_accessor :jam_track_right_id
 
-    def self.perform(jam_track_right_id)
+    def self.perform(jam_track_right_id, bitrate)
       jam_track_builder = JamTracksBuilder.new()
       jam_track_builder.jam_track_right_id = jam_track_right_id
+      jam_track_builder.bitrate=bitrate
       jam_track_builder.run
     end
 
@@ -38,12 +39,11 @@ module JamRuby
           # track that it's started ( and avoid db validations )
           JamTrackRight.where(:id => @jam_track_right.id).update_all(:signing_started_at => Time.now, :should_retry => false)
 
-          JamRuby::JamTracksManager.save_jam_track_right_jkz(@jam_track_right)
+          JamRuby::JamTracksManager.save_jam_track_right_jkz(@jam_track_right, bitrate)
 
-          length = @jam_track_right.url_48.size()
+          length = bitrate==48 ? @jam_track_right.url_48.size() : @jam_track_right.url_44.size()
           md5 = Digest::MD5.new
-
-          @jam_track_right.finish_sign(length, md5.to_s)
+          @jam_track_right.finish_sign(length, md5.to_s, bitrate)
 
           log.info "Signed jamtrack to #{@jam_track_right[:url]}"
 
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 4d81c68c4..e06e212b2 100644
--- a/ruby/spec/jam_ruby/models/jam_track_right_spec.rb
+++ b/ruby/spec/jam_ruby/models/jam_track_right_spec.rb
@@ -67,7 +67,7 @@ describe JamTrackRight do
       jam_track_track = FactoryGirl.create(:jam_track_track)
       jam_track = jam_track_track.jam_track
       
-      uploader = JamTrackTrackUploader.new(jam_track_track, :url)
+      uploader = JamTrackTrackUploader.new(jam_track_track, :url_48)
       uploader.store!(File.open(ogg_path, 'rb'))
       jam_track_track.save!
       
diff --git a/ruby/spec/jam_ruby/models/jam_track_track_spec.rb b/ruby/spec/jam_ruby/models/jam_track_track_spec.rb
index 7ffa09edd..ed128a097 100644
--- a/ruby/spec/jam_ruby/models/jam_track_track_spec.rb
+++ b/ruby/spec/jam_ruby/models/jam_track_track_spec.rb
@@ -47,7 +47,7 @@ describe JamTrackTrack do
 
     it "uploads to s3 with correct name, and then downloads via signed URL" do
       jam_track_track = FactoryGirl.create(:jam_track_track)
-      uploader = JamTrackTrackUploader.new(jam_track_track, :url)
+      uploader = JamTrackTrackUploader.new(jam_track_track, :url_48)
       uploader.store!(File.open(TRACK_NAME))  # uploads file
       jam_track_track.save!