This is what Nintendo says:
QUOTE
Can I Download a Nintendo ROM from the Internet if I Already Own the Authentic Game?
There is a good deal of misinformation on the Internet regarding the backup/archival copy exception. It is not a "second copy" rule and is often mistakenly cited for the...
what about ShugenDo? (http://www.sakirsoft.com)
its open source and theres already a linux version, plus u can play against other ppl online. :D
see my topic i made: http://www.gp32x.de/board/index.php?showtopic=42813