You can make your own (right?) by using the z-library files (free) to unzip and rezip the files.
http://www.gzip.org/zlib/There are also documents which explain how the scene.bin file is composed.
The file is in chunks of 0x2000 bytes.
Each chunk has an 0x40-byte header.
Each four bytes of the header is a pointer to a gzip file (0xFFFFFFFF meaning no files are left in that chunk and you should move on to the next chunk). The pointers are actually only 0.25 of the offset where they point (so take each pointer, multiply by 4, and that is the final offset of the gzip file).
There are 256 gzipped files.
Using the library from their site you can easily unzip and rezip them.
Packing them back into scene.bin needs to be done carefully, however.
L. Spiro