We have been posting our audio files as .wav files, but these are large and not all devices support these. So we are going to use MP3 files going forward. It will take us a few weeks to convert the files already posted, but we will do that. However, starting immediately we will post in MP3. Thanks to those of you who gave us feedback on the difficulty with the .wav files! Please share your thoughts with us going forward so we can best share our audio files with you!