The Wolof audio files are now in mp3 format. They should play in most widely used audio players.
The audio goes with the textbook Practical Course in Wolof: An Audio-Aural Approach by Pape Amadou Gaye published by the Peace Corp, Washington D.C. The text may be downloaded from the ERIC database website: Practical Course in Wolof.
Students will ordinarily find it necessary to practice the audio tape material many times before being able to comprehend every phrase and respond with ease.