I have a 2006 4runner Sport and it comes with the type 1 stereo which has MP3/WAV capability but the only thing is that I have not been able to figure out what type of format I need the disc to be in order to scroll through the folders. I have made MP3 data discs with various folders but it won't scroll through them and if I let the disc run it will only run through the first folder. I really don;t know what the folder buttons are for because they prety much don't do anything when I put in an MP3 disc with folders. Does it make a difference if you close the cd session or not...I had a Sony Xplode in my last car and it played them fine.