What are the limitations on the size of files? I work in video, so I've got single video files my home NAS that are over 40GB each and might want to play one some day.
Unless you are splicing many low to medium resolution videos together, I am guessing that those 40GB+ video files are HD, or Blu-Ray ripped files, which to my knowledge, can't be played on MorphOS yet. In fact, I don't think the PPC MacOSX can play Blu-Ray iso files either.
If you find out something different, then let me know. I have been working on archiving all of my movies over the last year and I am interested in figuring out the best setup for storage and playback possibilities, without buying any expensive new hardware.
Congrats on getting your G5 PowerMac and enjoy your learning period on MorphOS. I personally think it is the best Amiga inspired alternative, unless you are only interested in playing old 68k games, then you are better off just using the real thing, or if you no longer have a Classic Amiga, using UAE.