Fetch playlist mutating callbacks on the correct queue.
Fetch playlist mutating callbacks on the correct queue.

spectralmind/cocoalibspotify,spotify/cocoalibspotify,CrowdTunes/cocoalibspotify,spotify/cocoalibspotify,CrowdTunes/cocoalibspotify,spectralmind/cocoalibspotify,yingwang/Fspot,spotify/cocoalibspotify,spotify/cocoalibspotify,yingwang/Fspot,CrowdTunes/cocoalibspotify,andyvand/cocoalibspotify,spectralmind/cocoalibspotify,CrowdTunes/cocoalibspotify,yingwang/Fspot,andyvand/cocoalibspotify,andyvand/cocoalibspotify,spectralmind/cocoalibspotify,andyvand/cocoalibspotify