well answered roger. i just want to add some information about frostwire. frostwire will be based on the limewire source code and will be as current with the source code as possible.

frostwire will be drm-free as trap_jaw already mentioned and in the near-future may include other features that the limewire development team is slow to implement (or i should say debating to implement.)

FrostWire provides the alternative to the LW user wishing to share their own files without specially licensing them.

Their was also some small discussions between developers about banning the LimeWire DRM versions from being allowed to download content from FrostWire clients that LimeWire does not freely allow to share. This would prevent FrostWire clients from recieving too much stress and massive leeching on upload requests. Although this was only discussed and there are no current plans to do this. (other clients like <insert your favorite leech here> were also mentioned)

[EDIT]
Excerpt from interview removed. This information was already made public, but I guess its still alittle unknown. Its best to just let you wait and see.
[/EDIT]

If you are interested in helping with the development of FrostWire, please contact either me(aka alkalineX) or trap_jaw (aka gregorio) on the #LimeWire channel on server irc.freenode.net port 6667. we are currently in the proccess of creating a TODO list. so please be patient. please check the frostwire.com website for more details on what we are needing in development.

you will need a client such as mIRC (click here to get it!) to connect. mIRC is for the win32 system, other clients for other OS systems can probably be found in your distributions official packages. Example: apt-get install Xchat