queue: merge InfQueue and MainQueue
queue: merge InfQueue and MainQueue

kingsj/music-player,kingsj/music-player,kingsj/music-player,kingsj/music-player,kingsj/music-player,albertz/music-player,albertz/music-player,albertz/music-player,albertz/music-player,albertz/music-player,albertz/music-player