I'm a bit concerned that the default LimeWire installation comingles program and user data in the same directory. That's just not The Right Way to Do Things on reasonably modern operating systems.

I'want to install LimeWire into /opt/LimeWire but keep user data in $HOME/LimeWire. I can't make this work.

Is there any way to indicate to LimeWire (environment
variable, command line switch, smoke signals) where the
limewire.props file is located?

Or, alternately, if I make LimeWire run with $HOME/LimeWire as the current dir (and it will then be able to locate the .props file), is there any way I can tell it that the class files and such sit over in the /opt tree.