Hitting the "next track" button on the last track in a playlist results in unexpected behavior

[chrismessina]

Which OS were your using?
macOS 10.12.6

Which version of Auryo were you using?
1.1.0

Where did this error happen?
In the playback controller

When you're listening to the last song in a playlist, if you hit the "next track" button, the same track just starts over. Either the button should be disabled, or the next track or playlist in the sequence (if the playlist was played from the Stream) should be played.