Just a Heads up, Dolphin v 5.0-12188 ( almost a year and a half ago ) added support for WIA(Lossy) and RVZ(Lossless) formats for GameCube and Wii games.

Updating the systems section in emulators.xml as follows should add support. :D
<Emulator name="Dolphin" hidden="false">
<Systems>
<System ...

Hey there, Just recently EMUmovies has begun downloading very very slowly ( roughly an hour for 20 roms ) i've tried on a few different machines to see if it was a connection issue as well as explicitly allowing runway through my firewall.