Keep an eye on
this Blues News thread for alternative download sites, including torrents when they become available.
Edit:
Filerush has a torrent of the demo
Also: apparently the game has some high video card requirements to take note of before downloading.
Cards that the game supports:
Radeon X700 (PCIe)
Radeon X600 (PCIe)
GeForce 6600 (PCIe)
GeForce PCX 5900 (PCIe)
GeForce 5800 Series (AGP)
ATI Radeon X800 XT Platinum Edition
ATI Radeon X800 PRO
ATI Radeon 9800 Series
ATI Radeon 9600 Series
ATI Radeon 9550 (RV350LX)
ATI Radeon 9500 / 9700 Series
ATI Radeon 8500 Series
ATI Radeon X300 Series
NVidia GeForce 6800 Ultra
NVidia GeForce 6800 GT
NVidia GeForce 6800
NVidia GeForce FX 5950 Series
NVidia GeForce FX 5900 Series
NVidia GeForce FX 5700 Series