Code review comment for lp:~nick-dedekind/unity/preview.lp1043997-music-tracks

Looks good code wise. Though the only problem I see is when you re-open the dash the music stops playing. I would think it would continue to play independent of the dash opening/closing. Though im not sure how easy of a fix that will be...if it is large enough we should merge this part, then open a new bug to work that part. Let me know what you think!