i'm a long time linux user and have been using gtk-gnutella for the last year or so. i recently used kazaa for windows at a friends house and was surprised with the results it returned. i'm working on a pet project commandline based gnutella client and the thought of supporting the kazaa protocol seems intriguing. i've heard that it uses fastrack, which is proprietary. does anyone know if there are any resources regarding backwards-engineering projects for the fastrack protocol? i'd like to experiment with this and haven't been able to find anything on this on the web. i don't even have a windows box to use for tracing packets in/out of kazaa, but i'm hoping this has already been done. anybody have any info? anybody want to help out with this kind of project?