The way it works at the moment is, due to other commitments I don't go searching for news, I just post it when I "happen upon it". And I just "happened upon" an update over at the webpage of Sergey Bulba. In the "Engineer" section there's diagrams of the YM-LPT and AY-LPT interfaces, a couple systems for connecting the real chips to you PC. AY-LPT is supported by a number of emulators (not sure how many Windows-based emulators use it tho'), so you can improve your sound quality by building one of these devices. Or you could just use a real ZX like normal folk.