Too bad I found Yuppidu on CD a few days back, and when I read your messages here about this CD being quad I returned to the second hand shop today only to find out they had the title on the original Clan label. No mention of Grooveshark on the cover. So I think this one's probably stereo only.
BTW: @Oxfortdickie: If you are still in search of quad titles on CD, do you have a wantlist of titles you are still in search?
And the other way around, Which titles do you already have, no matter if already decoded on your blog?
I will be willing to hunt down titles and send them over to you as a rip, with scanned covers. On my visit today I got:
-Tangerine Dream "Alpha Centauri" (Sanctuary Records CMRCD566) Mentions "Quadro-Stereo-Mono-S2 Cosmic Music".
-Wallenstein "Stories, Songs & Symphonies" (ZYX OHR70033-2), also mentions "Quadrophonic recorded at Dierks Studios Cologne".
The original Wallenstein was an SQ record on Kosmische Kuriere. Tangerine Dream I don't know since the original Ohr releases didn't mentioned any matrix system, nor do the reruns on Brain Records. But since both albums were recorded at the same studio they both should be SQ.
Maybe I have additional titles in my collection.
-Kristian