DOSBOX can capture DRO files on AdLib register changes. This is a small and stupid program written by me which can play it back on Commodore 64 if it is equipped with an SFX Sound Expander cartridge (with YM3812 chip though, otherwise no OPL2 ...). I don't have that hardware either, so I can test only with emulator (but others told me it works ...). The tune is captured from Dune I game. Note, that VICE (the C64 emulator) may not emulate the hardware correctly so there can be minor glitches, I should have the real hardware to be able to tell :)
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https://www.youtube.com/watch?v=umiL62CPObg
A bit better version of this video: https://www.youtube.com/watch?v=Yg5SZlpXioA
Much more details on this project: http://cubed-borka.blogspot.hu/2017/04/mega-65-emulating-8080-cpu-and-running.html
This is a little project from me, emulating an intel 8080 CPU on Mega-65 only "from software" to be able to run CP/M applications. Here, original Microsoft BASIC-80 binary MBASIC.COM runs (CP/M version). Note about the bad cursor position. And sorry about the shaky video, but I have no tool to put my phone on, and I had to type as well somehow :) The error message at the end is normal, since there is no BOOT/WBOOT CP/M BIOS call emulation yet, just to be demonstrated the "unhandled trap" in my emulation code.
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https://www.youtube.com/watch?v=iJwvp6lZ2DU
After having sauna. Mökki-life is beautiful, one can enjoy the wind outside (and also the lake) after it :)
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https://www.youtube.com/watch?v=gehcGGzVHEY
MEGA65 ethernet demo: Remote SD card access, and "video streaming" (well, kind of ...) feature through the network from a Linux OS.
The Mandelbrot zoom + pic at the end is shown by Mega65 (on the FPGA board) but created by my Linux PC + streamed real-time via Ethernet between my LAN and the Mega65 (using my very lame "network stack" written for Mega65, it knows only Ethernet/ARP layer, and some UDP+ICMP communication, no TCP at all). Actually there can be some video too, instead of the Mandelbrot animation.
The part before that: accessing the SD-card of Mega65 through the network with a "server software" running on the Mega65, using a client for that on my Linux PC, both written by me.
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https://www.youtube.com/watch?v=MdXE_Dwn2yc
Home built scanner for the C64 from 1992, built by Arpi (the guy sitting at the computer - he is also the main author of MPlayer, btw). "Try to use it again" party in 2011. The design is "interesting", it uses a LED to shine through the paper and a photo diode, using some motors from cars (used to move the windscreen cleaner ...). We're using Commodore 128 now (in C64 mode though, so who cares). More photos: http://gabucino.be/files/c64scan.html
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https://www.youtube.com/watch?v=AaW_RlN1fjY