Simply, You replace the config files in your cache with the ones I have provided. You replace them with a cache tool, like Poesys cache tool, or Toms Cache Suite. Place the index folders directly in your cache. Open Client.java look for these methods and uncomment them one at a time. If you run your client with these uncommented out, they will repack that index folder.
//repackCacheIndex(1); // models
//repackCacheIndex(2); // anims
//repackCacheIndex(3); // music
//repackCacheIndex(4); // maps
Like I said, do each of them one at a time, to assure they repack without issue.