So I decided to write my own version of the S2HD engine instead of waiting for anything to come from here, and here's the result. <img src="http://gerbilsoft.soniccenter.org/Sonic/S2HD/s2hd-ar-title-screenshot.png" border="0" class="linked-image" /> Emerald Hill Zone and Hill Top Zone are currently fully playable, including bosses. I've only compiled a Windows version right now, since I had some issues with my Ubuntu 8.04 VM. Source code will be posted this weekend. Download: <a href="http://gerbilsoft.soniccenter.org/Sonic/S2HD/s2hd_alpha_release_0.4.zip" target="_blank">s2hd_alpha_release_0.4.zip</a> (45.94 MB) EDIT: I fixed a last-minute audio bug. Redownload the program if you already downloaded it. EDIT: And another last-minute bug fixed; this time, it's a crash bug. v0.4 uploaded.