From what I've heard, all versions of the engine going forward will encrypt media in stand-alone version, including scripts. I'm not sure why scripts weren't included in the encryption for the demo, but I believe they will be in the next version of the engine we see released.
System Specs: OS - Windows 7 Home Premium 64-bit SP1, CPU - AMD Phenom II X4 945, 3.0Ghz, RAM - 8Gb DDR3, GFX Card - 2048MB NVIDIA GeForce GT 640, FPSC-R Version - Beta 1.0071