Yes, similar websites already exist but unfortunately many of them forgot their mission. They restrict the content that was created on the backs of volunteers from being used by others as if it was all created by their own efforts. The cost of technology is dirt cheap these days, the real cost is labor and we are not here to profit off it.
Yes, it really is free as in "grace" so you can download anything for personal and even commercial use. There is only one small restriction: You may not use more than 50% of the content in our archive in such a way that it creates a competing archive. That simply means "be nice", don't try to shut us down, we are here to help you do awesome things and help build up the church.