Thanks for the feedback! That's a really interesting point, I hadn't considered that. I will have to be sure to add that to the artist contract.
To answer your second question, the music will be streaming, so in other words, I won't be able to prevent them from download. However: a.) the album will stream at 128kbps (vs 320kbps if you download), b.) the tracks wouldn't be separated (it would be one big awkward sound file with no metadata), c.) the download is extremely cheap to begin with, and d.) I'm trying to build a community of listeners that really want to support the artists.