[1] http://www.trymango.com/
Tried the Spanish one for a few mins, ok its not top of the range Language stuff, but you can replay the words as much as you need, it has little tips to suggest stress on words and I think its a good resource. I got confused initially with the clock, I thought it meant it was recording my responses before the time limit, but overall its easy to follow and estoy muy bien gracias.