Try going to http://www.savefile.com/files/520178 and downloading the truespeech file. I use express scribe and when I started using Vista I could no longer play wav files and getting messages that I needed a codec or to use windows media player to automatically install codec, didn't work. I have been trying to find help since August. I finally found this file, just downloaded it and installed, whola, I can use the program and hear wav files. I had heard that wav files do not automatically run on Vista. That is just weird since it seems to be the most popular sound file! Hope this helps some!