Hi to all. Thanks for the info you have given to me :-) A friend has found a very interesting personal site about a PIC16F877 = and interface with a Compact Flash.It is an MP3 player, but the source = code is in C. Go to: http://www.walrus.com/~raphael/html/mp3.html Tav -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics