I've just added free practice dictation to my site at http://www.shorthandshorthandshorthand.com/Transcribed.htm
Just go to the bottom of that page and you'll find the dictation at 60, 80, 100, 120, and 140. (It may take a minute to load if you're not on a high-speed line.) The nice thing is the transcript is right there.
I'll be changing the material monthly as I've done on the TRANSCRIBED page for years now and I fixed a few defective links I found last night.
BTW, unlike what you hear on Saturday Night Live, I have a typical New Jersey accent. . . . :-D
Get practicing, people!
Marc