from amarok-2.6.0 ebuild: cdda? ( $(add_kdebase_dep libkcddb) $(add_kdebase_dep libkcompactdisc) || ( $(add_kdebase_dep audiocd-kio) $(add_kdebase_dep kdemultimedia-kioslaves) ) ) from libkcddb-4.9.3 ebuild: add_blocker kdemultimedia-kioslaves This results in: * Error: The above package list contains packages which cannot be * installed at the same time on the same system. (kde-base/kdemultimedia-kioslaves-4.8.5::gentoo, ebuild scheduled for merge) pulled in by >=kde-base/kdemultimedia-kioslaves-4.4:4[-aqua] required by (media-sound/amarok-2.6.0::gentoo, ebuild scheduled for merge) (kde-base/libkcddb-4.9.3::gentoo, ebuild scheduled for merge) pulled in by >=kde-base/libkcddb-4.4:4[-aqua] required by (app-cdr/k3b-2.0.2-r4::gentoo, ebuild scheduled for merge) >=kde-base/libkcddb-4.4:4[-aqua] required by (media-sound/amarok-2.6.0::gentoo, ebuild scheduled for merge) >=kde-base/libkcddb-4.8.5:4[-aqua] required by (kde-base/kdemultimedia-kioslaves-4.8.5::gentoo, ebuild scheduled for merge) Because it's impossible to satisfy the dependency with kdemultimedia-kioslaves it should either be dropped or KDE team should make it possible to install it isde by side with libkcddb (I haven't looked at what the packages do to see if that's even possible).
What this _should_ be doing is pulling in libkcddb and kdemultimedia-kioslaves, both version 4.8.5, or pull in libkcddb and audiocd-kio >=4.9. libkcddb and || (kdemultimedia-kioslaves audiocd-kio) should be the same version here. I'm guessing the error here comes from having 4.8.5 installed but 4.9.3 stable, which leads to the error message seen here as it tries to update libkcddb while having kde 4.8.5 installed. Or something to that effect.
Read this: http://forums.gentoo.org/viewtopic-t-933172-highlight-amarok+kioslaves.html On my system unmerging kdemultimedia-kioslaves was all I needed to do to be able to emerge amarok-2.6.0. I suggest you give it a try.