You should be able to write directly to the floppy in Embird. I write Pes files to floppies with no problem.
Also, if you have the hus files on your hard drive, you can copy them to the floppy in Embird Manager. Open Embird in Manager, highlight the files you want to copy to the floppy, click on "Right Panel" and then "Input/Output Operations" and then "Copy Files to Floppy Disk". As long as your computer can read the floppy drive, you should be able to get your embroidery files to the floppy.