how to make sharing easy?

i'd like to share my songs.. all day long. cos i got a permanent internet acces.
but with limewire it is an enormous effor for my computer.
together with the java enviroment it uses about 50mb of my Memory.

so it isn't possible to work while spending songs.

does somebody know's a tool that makes gnutella network richer saves resources.

maybe i'm not very good informed. but till now i did't found a fast gnutella plattform.