For maximum tune 2 did you copy all 3 files from the a folder?
Also make sure you are using a desktop below 4092. I had the black screen at one point but it is working now.
You might have to keep the files in a folder... i have them there too, but i haven't tried removing the a folder.
Games don't have to be in the same folder as the emulator. You just need to make sure the dashboard is in partition 2 in the emu emudisk folders and the bios files are in the chihiro folder