You can use emulator of old PC and old PC operating system to install software and convert your song. All you need is USB floppy drive to read your diskettes.

Thanks Babasha
I was told by the writer of the software that converts old Ensoniq files -- the only software that will do this, the following:
"You would need access to an old IBM-PC compatible computer with an internal floppy disk drive for the conversion process. Additionally, that PC would have to be running either MS-DOS or a very old version of Windows such as Windows 98 SE. USB floppy disk drives do not allow reading non MS-DOS disk formats which is why you need the internal floppy disk drive."
So, I think the antique PC is still necessary.

There might be someone who reads these forums who's close enough to help... but we really need to know where you are?
(I'm in Canada - but I've corresponded with Vogons from all over the world)

What do you have for a PC - in particular i'm wondering it it's old enough to have a floppy controller with an internal connector for it.
If that's the case, you might only need to find a floppy drive and cable.

This is not entirely unlike problems people have running my ImageDisk tool on "modern" PCs.
ImageDisk has to run under DOS with an internal floppy because it accesses it directly (not through the OS) and in somewhat non-standard ways.

So what I've done for those people is made a stand-alone PC-DOS boot diskette which has a RamDisk (for working storage), limited USB drive & network support (to get images on/off).

Someone without a DOS PC can boot this disk (they do have to have a floppy - which is pretty much guaranteed with ImageDisk as it's purpose is archiving and restoring floppy disks), run ImageDisk make images then put them on USB drives of transfer them to another system over the network.

I could probably set you up with something similar - as long as you can get a floppy drive on your system.