The file and materials are designed to be used with mental ray; the drum shells are mapped and ready for the included flame textures. The blue flames bitmaps are already sized & named for their appropriate shells; 3 other (square) sample maps are included in the 'drum_kit_7pc_blueflames_mat.ZIP' file to get you started on some other designs if desired, or they can be u-tiled appropriately (see the preview files).
In the previews, the kit is in a simple room, walls, floor, ceiling, 3 point lights, rendered with final gather, GI and shadows (MR). The polygon count is high, but one cound render this model at a distance of 1 foot and it wouldn't matter. In the thumbnails & previews, samples per pixel was set to between 4 & 16. For convenience, the final gather & photon map files used in these renderings are provided as accomanying products, if you so choose to use the lighting in the max file.