Hi, I designed a new PCB : OPL2LPT.
This is a parallel port based soundcard featuring the yamaha OPL2 chip set.
OPL2LPT can be used for DOS gaming, thanks to the TSR and patching utility.
This also allows music production (for example using adlib tracker).
Here are some youtube videos :
8 bit guy review : https://youtu.be/z3DU2mNBa6M
lazy game review : https://youtu.be/1yB-O4TFIz8
phils computerlab review (uses it on core i7) : https://youtu.be/iPVqAvgGbWo
my adlib jukebox demo : https://www.youtube.com/watch?v=GbPPHvGpPEc
I have made a batch of solder kits, and some presoldered boards, available in my webshop : http://www.serdashop.com/OPL2LPT
There's also a discussion thread on vogons : http://www.vogons.org/viewtopic.php?f=62&t=55105
So, yeah, have a listen :-)