Installing paperclip.
Made changes to sound model for paperclip.  Made migration for paperclip.
Setting up controller and views for paperclip.
Made some changes to the schema.
Got paperclip to work.
Added the sound_name field back, so the user can use it instead of sound_file_file_name, which is used by paperclip.
Can upload sound and the database updates correctly.  Still need to attach user id to sound.
Made a not of the location of the sounds in the README.md.  Created resources for authentications, so I could log out properly.
sounds#index lists all sounds in db.
Created links to download files.  For some reason, the file is just played in the browser window.'
Still trying to get the downloads to work.