For the 'beta' version:
There will be only some servers, there will be easy program (.bat or .exe...) which you will be able to choose what you want to play... (Unfinnished)
You'll need the 'client side' mod though, in order to not get kicked (This is because it would ruin the "experience" while playing without skins nor sounds )
A "full" release will be soon, however...
There's tons of bugs, just letting you guys know