Comment 5 for bug 1055722

The Banshee scope doesn't currently support previews of songs when clicking the dash play button next to the track name (bug 1054720).

If the preview has "Play" and "Show in folder" buttons, it comes from Rhythmbox scope and the tracks should play inside dash after pressing the play symbol next to the track name. If those buttons are not there ( "Play" and "Show in folder"), the result comes from Banshee scope and you're probably encountering bug 1054720.