Like almost all Linux software...the changes should be able to be made through emacs, vim or whatever by editing a text file in the install dir.
btw..this is sort of off topic. But i have NEVER seen ANY p2p that was not available on linux. Not one.
I know fasttrack (kazaa/morpheous), opennap (winmx, napster, audiognome), gnuetlla, and web based
sites all have alternatives. The web is Unix (incase you didnt notice...alot do not but http:// use's forward
slash's) so almost everything that goes across it is usable by any unix platform.
I know the BEST alternative to Opennap lies on linux but cant remember the name...there is a link to it
at audiognome's homepage.
The best alternative to Kazaa (fasttrack) lies on linux...again cant remember the name.
Linux pretty much has a better alternative to all network clients...atleast at par with win versions.
www.google.com/linux should return all of them.