i can use the liveDB materials sometimes, but i have several problems using them:
1. i cannot download some of them because every time i try to use that material i get disconnected from the network
2. None-procedural materials don't seem to work properly for me (i use Blender to model my objects). The images included don't seem to work, or won't be placed/scaled properly, at least i don't see any kind of effect on my models. Procedural Materials seem to work just fine.
Windows 7 64Bit | GTX460 1Gig | 8 GB RAM