You won't be able: to save a modified MIDI file; to use the clipboard.
System requirements: Windows 98/ME/NT4/2000/XP/2003/7/8/8.1/10/11 (32-bit and 64-bit).
For users of Windows Vista: To install correctly run the application under rights of Administrator by right-clicking on the application and choosing this options.
To make StyleMorpher play with standalone Soft Synth you could use Virtual loopback MIDI cable for Windows XP/2003/Vista/7/8/10, 32 and 64-bit.