Definitely look into doing the block load option, because ChucK won't execute the next line (or compute audio) until the whole file is loaded into the SndBuf. That being said, I've fixed this many a time by loading the files once and getting them into the cache. You can make a dummy .ck file that just loads all those files into SndBufs, then returns. Run that first and then run your program. Clicks might go away. But if they're too big, then this won't work because there will be cache misses and you'll be back to disk seeks. PRC