SPPlaylist sets -loaded after setting properties, fixing failing test case.
SPPlaylist sets -loaded after setting properties, fixing failing test case.

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