b = SoundFile.collectIntoBuffers("yourSoundFileFolder/*"); // By Bjørn Houdorf, December 21, 2012

(
{
var number = b.numChannels, randomNumber, trigger, delayed, panned, sound, mixedSound, rotatedSound;
trigger = Dust.kr(Array.fill(number,1), 1, -0.5); // Generates random impulses from -0.5 to 0.5. as a excitation function
randomNumber = TRand.kr(1, number, trigger);
sound = PlayBuf.ar(Array.fill(number,1) ,randomNumber,1,trigger,0,0); // play sound files
delayed = DelayL.ar(sound, trigger, trigger); // delaying the sound files
panned = Pan2.ar(delayed, Array.fill(number,{1.0.rand2})); // pan them out in the stereo field
mixedSound = 0.05*Mix.new(panned);// and mix them to one stereo signal
rotatedSound = Rotate2.ar(mixedSound[0], mixedSound[1], LFSaw.kr(0.05)); // rotate stereo signal
}.play; // play it all
)