> As I transfer things to my A1200 using my MorphOS machine, its handy to > see CDXL videos before transfering them to my A1200.
V.A.M.P. can play CDXL files according to https://morph.zone/modules/news/article_storyid_1975.html (I didn't try). Newer version is available at http://www.morguesoft.eu/Paginas/vamp.htm (although CDXL compatibility not mentioned there).
> Will PowerSDL for MorphOS be compatible with it?
I guess so. Maybe it would be even possible to try porting the non-SDL version. I don't know whether the scaling/compositing routines are portable to MorphOS with no or few changes, though.