Just FYI, it is at least theoretically possible to do SB virtualization in DOS 
using USB devices.  It's on my list of things to get around to someday in my 
scant free time. But, SB virtualization would require I/O virtualization which 
is currently only available with the aid of MS EMM386 or 386MAX.  None of the 
current FreeDOS EMM's support I/O Virtualization.  I've been experimenting 
recently with adding support for I/O Virtualization to JEMM, but don't have it 
fully implemented yet.  I do actually have it working pretty well in JEMM, but 
now need to add support for JLM I/O Virtualization. I haven't even begun to try 
and do the USB part yet, but it is theoretically possible.  This could allow SB 
virtualization with almost any USB sound device.  BTW, I've also got ideas to 
do things like USB Ethernet cards and USB serial (RS-232) devices. So many 
ideas, so little time.
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