The free version of Download Accelerator carries annoying adverts, but that's the price you pay. It isn't spyware (or "rudeware") in the way that recent versions of RealPlayer have been. The RealPlayer archive, where you can get earlier iterations (some of which behave themselves a little better than others, or can be more easily whipped into line) is at

http://forms.real.com/real/player/blackjack.html