The Mixer problem is fixed when you install BoingBag1 and BoingBag2. The Mediator and Voodoo can be tricky. There are a lot of "gotchas".
1.First and foremost, make double sure the Mediator is fully seated on both sides.
2. Make sure the Zorro backplane is also fully seated in the slot.
3. Make sure Voodoo card is fully seated.
4. Check in the early startup-menu and make sure the Mediator is recognized: you should see "ProductID 2206/xx".
5. Boot the Amiga normally and run the "pciinfo" utility from a shell. If it returns "No PCI cards detected", repeat steps 1-3.
6. Check your "DEVS:Monitors" directory. There should be one file called Voodoo, nothing else.
7. Open the information requester for "Voodoo" and make sure you have the following tooltypes defined: "BoardType=Voodoo" and "SettingsFile=Devs:Picasso96Settings". The latter is default, the former has to be set manually.
8. Make sure you have the latest "voodoo.card" in the "Libs:Picasso96" directory.
9: open up you startup-sequence. You should see the command "loadmondrvrs" midway down. Below that there should be about 5 lines commented out with a preceding semicolon. These lines load the default Amiga video drivers and they should be commented out. If not, do so. Only "loadmondrvrs" is needed.
Thats not everything, but hopefully enough to get it working for you. Post here if you're still having problems.
EDIT: The "No Board" you describe means you need to do steps 1-3 as I stated above.
