Thanks, now I have "music trip 1" and "X-Copy demo" too.
It seems I actually had "introspective", but failed to mention it.
Those intros I were looking for were not on those sites. I have never seen them on any site.
I've downloaded a lot of packdisks, and searched through them, without results. My hope is that someone out there might have even bigger collection, a cataloged/categorized one