diff --git a/db/up/mixdown.sql b/db/up/mixdown.sql
index 9a71ec7c2..357bf0ac8 100644
--- a/db/up/mixdown.sql
+++ b/db/up/mixdown.sql
@@ -18,6 +18,7 @@ CREATE TABLE jam_track_mixdown_packages (
   md5 VARCHAR,
   length INTEGER,
   downloaded_since_sign BOOLEAN NOT NULL DEFAULT FALSE,
+  last_step_at TIMESTAMP,
   last_signed_at TIMESTAMP,
   download_count INTEGER NOT NULL DEFAULT 0,
   signed_at TIMESTAMP,
diff --git a/ruby/lib/jam_ruby/models/jam_track_mixdown.rb b/ruby/lib/jam_ruby/models/jam_track_mixdown.rb
index 645cf96fa..9c9777462 100644
--- a/ruby/lib/jam_ruby/models/jam_track_mixdown.rb
+++ b/ruby/lib/jam_ruby/models/jam_track_mixdown.rb
@@ -8,6 +8,8 @@ module JamRuby
     belongs_to :user, class_name: "JamRuby::User" # the owner, or purchaser of the jam_track
     belongs_to :jam_track, class_name: "JamRuby::JamTrack"
 
+    has_many :jam_track_mixdown_packages, class_name: "JamRuby::JamTrackMixdownPackage"
+
     validates :name, presence: true, length: {maximum: 100}
     validates :description, length: {maximum: 1000}
     validates :user, presence: true
@@ -18,6 +20,24 @@ module JamRuby
 
     validate :verify_settings
 
+    def self.index(params, user)
+      jam_track_id = params[:id]
+
+      limit = 20
+
+      query = JamTrackMixdown.where('jam_track_id = ?', jam_track_id).where('user_id = ?', user.id).order('created_at').paginate(page: 1, per_page: limit)
+
+      count = query.total_entries
+
+      if count == 0
+        [query, nil, count]
+      elsif query.length < limit
+        [query, nil, count]
+      else
+        [query, start + limit, count]
+      end
+    end
+
     def verify_settings
       # TODO: validate settings
       if false
diff --git a/ruby/lib/jam_ruby/models/jam_track_mixdown_package.rb b/ruby/lib/jam_ruby/models/jam_track_mixdown_package.rb
index 23f09075d..7be614d8a 100644
--- a/ruby/lib/jam_ruby/models/jam_track_mixdown_package.rb
+++ b/ruby/lib/jam_ruby/models/jam_track_mixdown_package.rb
@@ -36,7 +36,6 @@ module JamRuby
     MAX_JAM_TRACK_DOWNLOADS = 1000
 
 
-
     def after_save
       # try to catch major transitions:
 
diff --git a/ruby/spec/jam_ruby/models/jam_track_mixdown_package_spec.rb b/ruby/spec/jam_ruby/models/jam_track_mixdown_package_spec.rb
index 97589813a..83786af67 100644
--- a/ruby/spec/jam_ruby/models/jam_track_mixdown_package_spec.rb
+++ b/ruby/spec/jam_ruby/models/jam_track_mixdown_package_spec.rb
@@ -15,5 +15,44 @@ describe JamTrackMixdownPackage do
     puts package.errors.inspect
     package.errors.any?.should == false
   end
+
+
+  describe "signing_state" do
+    it "quiet" do
+      package = FactoryGirl.create(:jam_track_mixdown_package)
+      package.signing_state.should eq('QUIET')
+    end
+
+    it "signed" do
+      package = FactoryGirl.create(:jam_track_mixdown_package, signed: true, signing_started_at: Time.now)
+      package.signing_state.should eq('SIGNED')
+    end
+
+    it "error" do
+      package = FactoryGirl.create(:jam_track_mixdown_package, error_count: 1)
+      package.signing_state.should eq('ERROR')
+    end
+
+    it "signing" do
+      package = FactoryGirl.create(:jam_track_mixdown_package, signing_started_at: Time.now, packaging_steps: 3, current_packaging_step:0, last_step_at:Time.now)
+      package.signing_state.should eq('SIGNING')
+    end
+
+    it "signing timeout" do
+      package = FactoryGirl.create(:jam_track_mixdown_package, signing_started_at: Time.now - 100, packaging_steps: 3, current_packaging_step:0, last_step_at:Time.now)
+      package.signing_state.should eq('SIGNING_TIMEOUT')
+    end
+
+    it "queued" do
+      package = FactoryGirl.create(:jam_track_mixdown_package, signing_queued_at: Time.now)
+      package.signing_state.should eq('QUEUED')
+    end
+
+    it "signing timeout" do
+      package = FactoryGirl.create(:jam_track_mixdown_package, signing_queued_at: Time.now - (APP_CONFIG.signing_job_queue_max_time + 1))
+      package.signing_state.should eq('QUEUED_TIMEOUT')
+    end
+  end
+
 end
 
diff --git a/ruby/spec/jam_ruby/models/jam_track_mixdown_spec.rb b/ruby/spec/jam_ruby/models/jam_track_mixdown_spec.rb
index d56ff8fe3..0ffdba3f9 100644
--- a/ruby/spec/jam_ruby/models/jam_track_mixdown_spec.rb
+++ b/ruby/spec/jam_ruby/models/jam_track_mixdown_spec.rb
@@ -16,5 +16,21 @@ describe JamTrackMixdown do
     mixdown = JamTrackMixdown.create('abc', user, jam_track, {})
     mixdown.errors.any?.should == false
   end
+
+  it "index" do
+    query, start, count = JamTrackMixdown.index({id: jam_track}, user)
+
+    query.length.should eq(0)
+    start.should be_nil
+    count.should eq(0)
+
+    mixdown = FactoryGirl.create(:jam_track_mixdown, user: user, jam_track: jam_track)
+
+    query, start, count = JamTrackMixdown.index({id: jam_track}, user)
+    query[0].should eq(mixdown)
+    start.should be_nil
+    count.should eq(1)
+  end
+
 end
 
diff --git a/web/app/controllers/api_jam_track_mixdowns_controller.rb b/web/app/controllers/api_jam_track_mixdowns_controller.rb
new file mode 100644
index 000000000..1864b2378
--- /dev/null
+++ b/web/app/controllers/api_jam_track_mixdowns_controller.rb
@@ -0,0 +1,65 @@
+class ApiJamTrackMixdownsController < ApiController
+
+  # have to be signed in currently to see this screen
+  before_filter :api_signed_in_user
+  before_filter :lookup_jam_track_right, :only => [:download,:enqueue]
+
+  respond_to :json
+
+  def log
+    @log || Logging.logger[ApiJamTrackMixdownsController]
+  end
+
+  def index
+    data = JamTrackMixdown.index(params, current_user)
+    @jam_track_mixdowns, @next, @count = data[0], data[1], data[2]
+
+    render "api_jam_track_mixdowns/index", :layout => nil
+  end
+
+  def download
+    if @jam_track_right.valid?
+
+      all_fingerprint = params[:all_fp]
+      running_fingerprint = params[:running_fp]
+
+      if Rails.application.config.guard_against_fraud
+        error = @jam_track_right.guard_against_fraud(current_user, {all:all_fingerprint, running: running_fingerprint}, request.remote_ip)
+        if error
+          log.warn("potential fraud detected: #{error}")
+          render :json => { :message => error }, :status => 403
+          return
+        end
+      end
+
+      sample_rate = params[:sample_rate].nil? ? nil : params[:sample_rate].to_i
+      if @jam_track_right && @jam_track_right.ready?(sample_rate)
+        @jam_track_right.update_download_count
+        now = Time.now
+        @jam_track_right.last_downloaded_at = now
+        @jam_track_right.first_downloaded_at = now if @jam_track_right.first_downloaded_at.nil?
+        @jam_track_right.save!
+        redirect_to @jam_track_right.sign_url(120, sample_rate)
+      else
+        @jam_track_right.enqueue_if_needed(sample_rate)
+        render :json => { :message => "not available, digitally signing Jam Track offline." }, :status => 202
+      end
+    else
+      render :json => { :message => "download limit surpassed", :errors=>@jam_track_right.errors }, :status => 403
+    end
+  end
+
+  def enqueue
+    sample_rate = params[:sample_rate].nil? ? nil : params[:sample_rate].to_i
+    enqueued = @jam_track_right.enqueue_if_needed(sample_rate)
+    log.debug("jamtrack #{enqueued ? "ENQUEUED" : "NOT ENQUEUED"}: jam_track_right=#{@jam_track_right.id} sample_rate=#{sample_rate} ")
+    render :json => { :message => "enqueued" }, :status => 200
+  end
+
+  private
+  def lookup_jam_track_right
+    @jam_track_right = JamTrackRight.where("jam_track_id=? AND user_id=?", params[:id], current_user.id).first
+    raise JamPermissionError, ValidationMessages::PERMISSION_VALIDATION_ERROR unless @jam_track_right
+  end
+
+end # class ApiJamTracksController
diff --git a/web/app/views/api_jam_track_mixdowns/index.rabl b/web/app/views/api_jam_track_mixdowns/index.rabl
new file mode 100644
index 000000000..3cfb8508b
--- /dev/null
+++ b/web/app/views/api_jam_track_mixdowns/index.rabl
@@ -0,0 +1,11 @@
+node :next do |page|
+    @next
+end
+
+node :count do |page|
+    @count
+end
+
+node :mixdowns do |page|
+  partial "api_jam_track_mixdowns/show", object: @jam_track_mixdowns
+end
\ No newline at end of file
diff --git a/web/app/views/api_jam_track_mixdowns/show.rabl b/web/app/views/api_jam_track_mixdowns/show.rabl
new file mode 100644
index 000000000..a599f8a64
--- /dev/null
+++ b/web/app/views/api_jam_track_mixdowns/show.rabl
@@ -0,0 +1,13 @@
+object @jam_track_mixdown
+
+attributes :id, :name, :description, :jam_track_id
+
+node :settings do |item|
+  JSON.parse(item.settings)
+end
+
+child(:jam_track_mixdown_packages => :packages) {
+  node do |package|
+    partial("api_jam_track_mixdowns/show_package", :object => package)
+  end
+}
diff --git a/web/app/views/api_jam_track_mixdowns/show_package.rabl b/web/app/views/api_jam_track_mixdowns/show_package.rabl
new file mode 100644
index 000000000..5dba729db
--- /dev/null
+++ b/web/app/views/api_jam_track_mixdowns/show_package.rabl
@@ -0,0 +1,3 @@
+object @package
+
+attributes :id, :file_type, :sample_rate, :encrypt_type, :error_count, :error_reason, :error_detail, :signing_state, :packaging_steps, :current_packaging_step
diff --git a/web/config/routes.rb b/web/config/routes.rb
index e0e9ea630..8c994ed6f 100644
--- a/web/config/routes.rb
+++ b/web/config/routes.rb
@@ -247,6 +247,7 @@ SampleApp::Application.routes.draw do
     match '/jamtracks/enqueue/:id' => 'api_jam_tracks#enqueue', :via => :post, :as => 'api_jam_tracks_enqueue'
     match '/jamtracks/rights/:id' => 'api_jam_tracks#show_jam_track_right', :via => :get, :as => 'api_jam_tracks_show_right'
     match '/jamtracks/keys' => 'api_jam_tracks#keys', :via => :post, :as => 'api_jam_tracks_keys'
+    match '/jamtracks/:id/mixdowns' => 'api_jam_track_mixdowns#index', :via => :get
 
     # Shopping carts
     match '/shopping_carts/add_jamtrack' => 'api_shopping_carts#add_jamtrack', :via => :post