I was chatting to a friend on IRC and he got them to play in mplayer by editing the mplayer ebuild:
[12:58] <afv-13> [ebuild R ] media-video/mplayer-1.0_pre7 -3dfx -3dnow -3dnowext +X +aac -aalib +alsa (-altivec) -arts -bidi -bl -cdparanoia -cpudetection -custom-cflags -debug -dga -directfb +divx4linux -doc -dts -dv -dvb +dvd +dvdread -edl +encode -esd +fbcon -ggi +gif +gtk +i8x0 -ipv6 -jack -joystick +jpeg -libcaca -lirc -live -lzo +mad -matroska -matrox +mmx -mmxext -mythtv -nas -nls +nvidia +opengl +oss +png -rea [12:58] <afv-13> l -rtc +samba +sdl +sse -sse2 +svga -tga -theora +truetype +v4l -v4l2 +vorbis +win32codecs -xanim -xinerama +xmms +xv +xvid -xvmc 0 kB [12:59] <Ravilj> do you mind if i email a chap on the gentoo mailing list, he was having problems with playing it in mplayer? [13:00] <afv-13> yar [13:00] <afv-13> i don't Note the +aac use flag. Hope that helps and works :D -- gentoo-user@gentoo.org mailing list