FLStudio includes a wide range of plugins: generators, tools and effects. However most of these are FLStudio format only. Which means they only work in FLStudio.
If they are available as a VST or AU format ...
FLStudio 64 Bit.
Direct Wave will load most SoundFonts. This will work in FLStudio 32 and 64 Bit.
Use FLStudio 32 Bit VST inside FLStudio 64 Bit as shown below...
Extra information
So what ...