yah give up on it and just install Lmule
if you really want to use a *mule client ...
there is no point in running any
p2p app with wine as there are more than enough available in linux ...
for instance here is a list of a couple hundred projects
is probably the most recommended of all
as of your error, it sounds like either :
a) you are logged in as normal user, and you opened a terminal and logged in as root and try to run it
b) vice versa pertaining to the above ..