OK, lets get something straight, I am a real Amiga person, I use my Amiga's everyday and use them. I am not a fake Amiga person who sold their old silicon and then chime in that I use "MorphOS Amiga done right" right where, how and why, prove it. Run Pen Pal, Wadsworth, Final Copy, DPaint, etc. Show me a new browser that can keep up with todays sites so you can surf the web, play mp3's, watch videos and play movies. I have a hard time loading up MorphOS (I don't and won't buy old used up Mac silicon, for that matter I won't buy new Mac silicon)
Most of these legacy apps work just fine (and faster than any Amiga). Most of my settings and software from my good old A4k are still there on my Pegasos and Macs. It just feels faster.

As for the browser, i guess you haven't followed too closely. Odyssey scores currently 365 + 15 points at html5test.com, i.e better than FireFox 11, Opera 11 and Safari 5.1, even though a couple features like workers and webgl had to be disabled, unfortunately. It will also play many streaming sites like youtube, dailymotion, vimeo (and more efficiently than OSX in that regard, since there's much less overhead).
As for playing movies and playing MP3, we also have several players out there that handle about all known formats (mplayer for instance). The only trouble is playing 1080p h.264 content fast enough (it still does it faster than OSX and Linux by a good margin, in any case).