Yet another strange program available: now you can unpack any XFD supported compressed file transparently in Windows command prompt if you are too lazy to run it manually inside emulation
http://www.winuae.net/files/b/xfduae.zip
Unpack to some empty directory, do not move or rename anything, copy new enough winuae.exe to same directory.
WinUAE ROM scanner must have any 68020-compatible 3.0 or 3.1 Kickstart ROM detected.
xfduae.exe <source file> <destination file> (if no destination, overwrite source with unpacked version)
don't ask..