well, if you have obj and dxf and standard file extentions, just put them in a directory that you make and organize it with file structure. I call mine "brycestuff" and have subdirectories for materials (jpg, bmp) and models with further subdirectories for categories like ships and sci fi. If you have obp objects, those are proprietary. Best to extract them to a temp file, open bryce, and add them to your library. As for textures, doesn't matter what format they are. If you want them in the library, just add them to your texture library. I would caution adding too many items to the library. Its easy to get the library very bulky and if you don't NEED to put them in there (ie, they are not proprietary), then don't (unless you use them a lot). Reason is, if you decide later to delete them, Bryce only deletes the icons, not the actual objects/textures from your library, so if you want to slim down your library later you have a manual purging process to go through.