I sent a message earlier today but didn't see it. if it comes through twice for some reason, forgive. My problem is this: I spork a shred in code. I do this with a reference, like, spork ~ function () @=> Shred @ reference then when it's time to remove, i use Machine.remove( reference,id() ); the problem is, with oscillators and stks, the shreds do not stop audio cleanly. for example, when i have phasor => lpf => dac and remove the shred, the notes stop, but a high pitched tone lingers. also, when BlowBotl => rev => dac and remove the shred, the notes stop, but a medium pitched noise sound lingers forever. the time is synchronized to beat with now % T etc. I tried chucking and unchucking the ugens at the end of every loop. i tried with machine.add and remove from file instead of spork. i tried setting the gain and freq to zero at the end of every loop, but all these methods result in lingering sound. how do you completely kill the audio from a shred in code? any help? thanks in advance, brian