World of Longplays has posted a five hour playthrough of Wing Commander for the Sega CD (known as the Mega CD in Japan and Europe). Quite a few people played WC on the Super NES, but the Sega port was far less popular due to the specialized Genesis add-on hardware it required. However, this version of the game has the unique distinction of being the only non-SWC WC1 variant with full speech. Fans have posted samples of what this sounded like before, but this is the most extensive way to experience the audio without owning the game yourself. It also highlights the slightly toned down visuals and new soundtrack. Part 1 of the video is available below and Part 2 is online here.
HCl already has a Sega CD voice extractor in the archive. We're still waiting for someone to figure out how to patch speech into the DOS version! If you can't wait for that and decide the hunt down the originals, don't forget the memory cart!