>> I want to make a project where you press a button and a short sound >> (under 5 seconds) plays from a speaker. Also look in the archives for Roman Black's one bit sound output. AFAIR he used ADPCM and got reasonably low data rates. RM -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist