fixes #813 -- don't sort if the timestamps are all === 0
fixes #813 -- don't sort if the timestamps are all === 0

walterbender/musicblocks,eohomegrownapps/musicblocks,eohomegrownapps/musicblocks,Hrishi1999/musicblocks,Hrishi1999/musicblocks,Hrishi1999/musicblocks,walterbender/musicblocks,walterbender/musicblocks,eohomegrownapps/musicblocks