MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
Every ~6 tiles takes about 2a of current, so as long as you size your power supply correctly it shouldn't be a problem. I recommend printing two controller enclosures and only putting a controller in one, then input power from the second one on the opposite end because a long chain will probably be dimmer at the end. However, if you are not going to have the leds set to white it doesn't matter as much because they draw a lot less current.