Followed a chat in #morphos the other day about 3.4
and a few links were posted ...

http://bugzilla.mplayerhq.hu/show_bug.cgi?id=87
http://mplayerhq.hu/pipermail/mplayer-users/2004-September/048380.html
http://mplayerhq.hu/pipermail/mplayer-users/2004-September/048388.html

So I guess if gcc 4.0 compiles without trouble the
mplayer sources you can see it quite soon for mos ...