Question

I bought a classic StudioLive in 2012 and registered it.  Where do I go to download the copy of Studio One Artist that came with the console?  I understand that an upgrade to Studio One 3 Artist would cost something, but I should already have the rights to Studio Live Artist 2.  I just want to download the software that's already mine.  

From a press release in 2009:

"Studio One Artist is bundled free with all PreSonus interfaces, including the StudioLive 16.4.2 digital mixer. Customers who bought a PreSonus interface after January 1, 2009, and registered their unit will receive a free copy of Studio One Artist and can upgrade to Studio One Pro for $199. Those who bought their PreSonus interfaces before January 1, 2009, can buy Studio One Artist for $99, with the same upgrade offer to Studio One Pro." (http://www.presonus.com/news/press_releases/PreSonus-Ships-Studio-One-Pro-and-Studio-One-Artist)

Answer 1

You mixer would have come with a physical DVD copy of Studio One  Artist with a Product Key located within the DVD Sleeve.

You should check all the paper work and packaging that came with your Mixer. There will be a DVD of Studio One v2 Artist, a DVD of Capture and a Driver Disk from back in that era.

You will also want to make sure that your mixer is registered.