The test results you have selected are very old and may not represent the current state of Wine.
Selected Test Results (selected in 'Test Results' table below)
Installation successful. The only problem I encountered were the "access control list" errors (it seems to have something in common with setting NTFS privileges on created directories). Vorbis did copy to the Windows dir, but it didn't register itself in system.ini (a little editing did the trick).
The application itself works fine. Every plugin that I've tested worked (including the Wasp, which had an issue with mfc42.dll, just install the dll and it will work). There's a transparency issue (the logo, Fruity Dance plugin), but it's might be related to me running the whole thing on MacOS X).
What does not
Didn't find eanything. ;)
What was not tested
The additional programs, that are supplied with the default install of FL Studio. I just concentrated on the application itself.
For all you OS X fans out there: I recommend using Wine and especially WineBottler builds made by kronenberg.org. WineBottler is very helpful with installation of third-party libraries (mfc, vb runtime, ogg, dx9, etc.) during software installation and can make an .app bundle out of your Windows app. ;) It really eases things up.