Added playlist.
Add to playlist only if not added yet.
Added logic to play file on empty playlist.
Used playAudio() instead of copy-paste code.
Replaced childNodes with children.
Added logic to play next song in playlist.
Fixed bug where part of song is replayed while loading next one
Fixed bug where part of song is replayed while loading next one
Moved element creation inside condition.
Playlist now in array.
Update README.md