I have actually been waiting a few years for this, but finally FilePlanet has a proper download manager of their own. Get it Here and if you want a download to try it out on, checkout FilePlanet's E3 Files List.
It only works with FilePlanet and unlike GameSpot's downloader, isn't a P2P client, so all the bits are coming directly from FilePlanet servers. I have added a test file from a public server, just to if the client will automatically start downloading once I am first in queue, but version one did, so I think this will too, and that is excellent news for none subscribers.
EDIT: It looks like it has been programmed using .Net.
EDIT: If you use the public servers you CAN queueup as many downloads as you like and it will automatically start those downloads when it is your turn.