# emerge -aDNuv world

These are the packages that I would merge, in order:

Calculating world dependencies ...done!
[blocks B     ] media-libs/freealut (is blocking media-libs/openal-20050504-r1)
[ebuild     U ] media-libs/openal-20050504-r1 [0.0.8] +alsa +arts -debug -esd +mpeg +sdl +vorbis 0 kB