Does anyone know of any other spanish learning software besides Rosetta Stone?

I would like to re-learn spanish and speak it fluently this time. I wanted to purchase Rosetta Stone because I've heard that it's a really good program to learn spanish. Unfortunately, Rosetta Stone is too expensive for my budget. Volume 1 is $250 and to purchase a complete set which includes volume 1-5, the price is around $500 to $600 a set. I'm looking for the second best, interactive, spanish learning software out there; or the best, most affordable, interactive, spanish learning software on the market.