Save track files in new Sound model:

* Consolidate migrations
* Add Sound model. Each sound can belong to a track and contains
  informations about one sound file.

db/migrate/20110711195337_create_playlists.rb

@@ -1,13 +0,0 @@
-class CreatePlaylists < ActiveRecord::Migration
-  def self.up
-    create_table :playlists do |t|
-      t.string :name
-
-      t.timestamps
-    end
-  end
-
-  def self.down
-    drop_table :playlists
-  end
-end

db/migrate/20110713182005_create_tracks.rb

@@ -1,13 +0,0 @@
-class CreateTracks < ActiveRecord::Migration
-  def self.up
-    create_table :tracks do |t|
-      t.string :name
-
-      t.timestamps
-    end
-  end
-
-  def self.down
-    drop_table :tracks
-  end
-end

db/migrate/20110725110405_add_mime_type_field_to_tracks.rb

@@ -1,9 +0,0 @@
-class AddMimeTypeFieldToTracks < ActiveRecord::Migration
-  def self.up
-    add_column :tracks, :mime_type, :string
-  end
-
-  def self.down
-    remove_column :tracks, :mime_type
-  end
-end

db/migrate/20110726101228_add_sha256_field_to_tracks.rb

@@ -1,9 +0,0 @@
-class AddSha256FieldToTracks < ActiveRecord::Migration
-  def self.up
-    add_column :tracks, :sha256, :string
-  end
-
-  def self.down
-    remove_column :tracks, :sha256
-  end
-end

db/migrate/20110804225816_add_sessions_table.rb

@@ -1,16 +0,0 @@
-class AddSessionsTable < ActiveRecord::Migration
-  def self.up
-    create_table :sessions do |t|
-      t.string :session_id, :null => false
-      t.text :data
-      t.timestamps
-    end
-
-    add_index :sessions, :session_id
-    add_index :sessions, :updated_at
-  end
-
-  def self.down
-    drop_table :sessions
-  end
-end

db/migrate/20110805201426_create_users.rb

@@ -1,14 +0,0 @@
-class CreateUsers < ActiveRecord::Migration
-  def self.up
-    create_table :users do |t|
-      t.string :email
-      t.string :password
-
-      t.timestamps
-    end
-  end
-
-  def self.down
-    drop_table :users
-  end
-end

db/migrate/20110809130610_add_password_hash_to_users.rb

@@ -1,11 +0,0 @@
-class AddPasswordHashToUsers < ActiveRecord::Migration
-  def self.up
-    add_column :users, :password_hash, :string
-    remove_column :users, :password
-  end
-
-  def self.down
-    remove_column :users, :password_hash
-    add_column :users, :password, :string
-  end
-end

db/migrate/20110830110346_add_user_id_to_playlists.rb

@@ -1,9 +0,0 @@
-class AddUserIdToPlaylists < ActiveRecord::Migration
-  def self.up
-    add_column :playlists, :user_id, :integer
-  end
-
-  def self.down
-    remove_column :playlists, :user_id
-  end
-end

db/migrate/20110913195421_add_email_unique_index_to_users.rb

@@ -1,9 +0,0 @@
-class AddEmailUniqueIndexToUsers < ActiveRecord::Migration
-  def self.up
-    add_index :users, :email, :unique => true
-  end
-
-  def self.down
-    drop_index :users, :email
-  end
-end

db/migrate/20110915211845_initial_schema.rb

@@ -0,0 +1,48 @@
+class InitialSchema < ActiveRecord::Migration
+  def up
+
+    create_table :playlists do |t|
+      t.integer  :user_id
+      t.string   :name
+
+      t.timestamps
+    end
+
+    create_table :sessions do |t|
+      t.string   :session_id, :null => false
+      t.text     :data
+
+      t.timestamps
+    end
+
+    add_index :sessions, :session_id
+    add_index :sessions, :updated_at
+
+    create_table :tracks do |t|
+      t.string   :name
+
+      t.timestamps
+    end
+
+    create_table :users do |t|
+      t.string   :email
+      t.string   :password_hash
+
+      t.timestamps
+    end
+
+    add_index :users, :email, :unique => true
+
+  end
+
+  def down
+    drop_index :sessions, :session_id
+    drop_index :sessions, :updated_at
+    drop_index :users, :email
+
+    drop_table :playlists
+    drop_table :sessions
+    drop_table :tracks
+    drop_table :users
+  end
+end

db/migrate/20110916003929_create_sounds.rb

@@ -0,0 +1,15 @@
+class CreateSounds < ActiveRecord::Migration
+  def up
+    create_table :sounds do |t|
+      t.integer :track_id
+      t.string  :sha256
+      t.string  :mime_type
+
+      t.timestamps
+    end
+  end
+
+  def down
+    drop_table :sounds
+  end
+end