Okay, try this one now: http://aug.ment.org/software/readanysf~testing2.tar.gz I don't think it is a memory leak error. memory usage should be real tight. I'm guessing the buzzing comes from when the dsp is stuck. It can't happen in the readanysf~ function that sends out the audio. ..but could happen right when you open a file and the open callback spits out file inof. I've moved some things around. I hope this helps. please test and let me know. -august.