use background image for displaying the track image, and immediately update score vars when clicking play/pause
first pass at volume control
pass in current collection to remove_orphans
vertical slider for volume
rename "player" to "playit" because confusion
persist volume
adding "stop" interface
set player state to stopped when a track finishes
logic for removing unplayable tracks
new playlist design - don't have big clunky "currently playing", just have a playlist with the current one having controls