YTFS YTFS is a a simple read-only file system that downloads a feed of top-rated YouTube videos and presents them in the root directory as a clickable webloc to the video. The DEVELOPER_OBJC_HOWTO is a step-by-step tutorial that walks you through creating the YTFS file system. Please read and follow the instructions in the tutorial located here: http://code.google.com/p/macfuse/wiki/DEVELOPER_OBJC_HOWTO