Regarding WinMX, I recommend
this Wikipedia article , which seems to have information on what happened as well as several links to news articles.
As for a good file-sharing program, I highly recommend
Filetopia . I have
a post on it on another thread, if you´d like to check out my recommendation. I´ve used it for 2 1/2 years (though sadly don´t have much access to Internet down here in Honduras, so can´t be on it much at all), and thoroughly loved it. The human factor is the best touch, I think . . .
To quote a recommendation I made elsewhere (can´t link to that, I´m afraid, so will copy here):
I still recomment FT, aka Filetopia. No viruses, spyware, nothing, filesharing police have *not* hit on it as far as I know (the userbase is surprisingly small, for the amount of stuff you can find), and it has a *wealth* of stuff available. There, it's more a matter of finding the right people to connect with--some users have lists with 600+ gig of files. It's *awesome*--cannot recommend it more highly. Have used it for 2 1/2 years, no viruses, no problems other than the usual quirks every program has. And I have made some great friends there--it vaguely reminds me of IRC (I think IRC must have been used for the general structure of FT).
There *is* a global search option, but a lot of people have it turned off due to leeches. Your best bet for finding stuff is to go to a channel geared towards the theme of what you want, and do a channel search to find them in people's lists (this is particularly helpful if you want to make sure *which* file this is, in the case of identical names--just ask the user). I.e. if you want TV eps, go for #TVseries or #TV Eps Express (I prefer the former). If you want movies, #FBO is one of the best. If you're looking for folk music, #Folk Fans or one of the offshoots that have sprung up recently (since leeches started coming into Folk Fans and the owner isn't around much any more). Other types of music . . . I don't know what you want, so can't point you to it. It's not as sure at finding everything, but if you find the right people who have stuff like what you want, the personal touch is worth *so* much. I can't tell you how many times I've wanted some specific file that no one had on FT, and a friend or two would search SoulSeek or whatever other program and find it for me (and the more people get from outside, the better FT's offerings will be). Do favors for people, share all you got, and you're set for finding most anything (you can also go channel-hopping, one great method of finding stuff). (The messaging system--sort of like internal e-mail--is a bonus also. Great for asking a question of someone who's Away--which many are, due to leaving their computers on 24/7, and being from all over the world. You can also leave messages on each channel's message board, and users will check and read, reply, if you have something you're looking for.)