What is your operating system? Windows 95? Mac? What are the errors or the symptoms that happen with the encoders? Sometimes you have to know if you are ecoding a mono vs. stereo, and 11..., 22..., or 44... as the encoding rate. Most .wav editors let you see and change these settings even with the included .wav player with Windows 95. Mess around with the saving or save-as or file properties settings are on your .wav editor. Let me know what happens.