Not only is the WinX68K emulator updated, it's in English--in a ZIP file!
Besides that, the sound did not go offkey when I loaded a savestate while sound was playing (the tone unfortunately hangs while you're in the menu, but the game played fine afterwards). This is a big improvement by itself.
Installation was similarly very simple--I just unzipped the file and dropped it in my current WinX68K emulator's folder and started playing! Nothing needed adjustment, though it's nice to note that if I wanted to I could change stuff.
Give it a try...you won't regret it.
Can't say I know where to find Daimakaimura, Strider, and Space Harrier for download, though :/