Your emulator version is outdated... And besides. This emulator is still in DEVELOPMENT. This means that lots of games arent working fully yet. Especially Wii games. I noticed that lots of Gamecube games do work, without sound though.

But it's a start and people are still working their ass of to improve it.
So if you see/find other games that arent working yet. Be patient and wait for the next (unoffcial) release of the emulator and try again.