looping a sound from a sprite, plays the whole sprite after starting it from an event

[raphaelstary]

when using sound sprites,
when you try to loop a sound after another sound ended it plays the whole sprite

var songA = sounds.play(SONG_A);
sounds.once('end', function () {
            var songB = sounds.play(SONG_B);
            sounds.loop(true, songB);
}, songA);

[raphaelstary]

a similar thing happens, if you try to fade (out) a sound, after an event was registered (or triggered), the fade is not happening (sometimes not every time)

var lastSound = sounds.play(Sound_A);
sounds.once(...., lastSound);

sounds.fade(..., lastSound); // sometimes not working