12 Happy-Chinese Pinyin Lessons

This website has a list of the "12 Happy-Chinese Pinyin Lessons."  The audio is O.K.  The downside of these lessons is that the examples they give you to help you to remember each pinyin sound is based on Chinese.  For example, to teach you the sound for "ü," they tell you it's the same sound as the word for "fish" in Chinese.  So this lesson set may be more helpful to children who already speak Mandarin at home and are learning the writing system.  However, for those of you who are learning Chinese as a foreign language, go ahead and take a look at this site.  There is lots of repetition of the sounds and it is always spoken in correspondence with the pinyin so you can still practice connecting the pinyin with the correct sound.