New user: a few questions

[Runo]

Dolphin is an open source project, so anyone who wants can compile it, so that you have is the newest build compiled by the devs, but you can grab the ones compiled by other people, here:
Some devs too make their own builds, so they can compile as often as they want...

Orleans Builds:
http://cid-ec92aae47a89073b.skydrive.live.com/browse.aspx/Emulation/Dolphin?view=details&wa=wsignin1.0&sa=773304384

Omegadox Builds:
http://cid-53f64087c2ab7e7d.skydrive.live.com/browse.aspx/Builds/Dolphin?wa=wsignin1.0&sa=911641835

UnknownForce Builds:
http://unknownforce.selfip.com/