Right now, I have the sound demo program on my calc with a working headphone link, and it works fine. I can hear the different tone and pitch changes fine. The only problem is I can't get wav files on my calculator. If anyone can help me out, I'd appreciate it. Thanks. Marc D. McCoy http://rsd.jtwn.k12.pa.us/~marc/ E-mail: marc@rsd.jtwn.k12.pa.us