Lately i've been trying to find a work around for the new launcher for minecraft beta and alpha multiplayer. I hope someone out there knows how to play multiplayer in beta and or alpha cause when i downloaded an alpha 1.2.6 server and it didn't quite work when i try joining it says
failed to log in:
so i was hoping there's maybe a mod or a way that i can play multiplayer in alpha or if so beta 1.7.3 or lower.