aww...the SF page is down..I wonder if the author knows that, If I'm not mistaken I do recall reading that the main author did step down from the project..
I've found a great list of the NES emulators on linux at http://www.zophar.net/unix/nes.html
[although there's a few ad's on there...]
Personally, I just use nester on my dreamcast
regards,
keyshawn
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