I've looked up FuriaTune and it seems to be a small file which will easily fit on a floppy disk.
If you can boot to Workbench you should be able to run a tool like Crossdos which will allow you to read a 720 DD floppy disk. If you can get this working, and you have a way of writing to a floppy disk on a pc then you could use this method to copy the file.
Another alternative is to put your CF card into a PC and use Amiga Forever to mount it in the emulator. You could then copy FuriaTune to the CF card.
To start with do you have a PC with either a CF card reader or a floppy drive?
