$ emerge -u world Calculating world dependencies ...done! >>> emerge kde-base/kdemultimedia-3.0.1 to / nas esd motif gtk slang tcltk >>> Downloading ftp://ftp.freenet.de/pub/ftp.ibiblio.org/pub/Linux/distributions/gentoo/distfiles/kdemultimedia-3.0.1.tar.bz2 Error: A file called kdemultimedia-3.0.1.tar.bz2 was not found on the server >>> Downloading http://www.ibiblio.org/gentoo/distfiles/kdemultimedia-3.0.1.tar.bz2 Error: The file was not found on the server! >>> Downloading ftp://ftp.kde.org/pub/kde/stable/3.0.1/src/kdemultimedia-3.0.1.tar.bz2 Error: A file called kdemultimedia-3.0.1.tar.bz2 was not found on the server >>> Downloading ftp://download.us.kde.org/pub/kde/kde/stable/3.0.1/src/kdemultimedia-3.0.1.tar.bz2 Error: A file called kdemultimedia-3.0.1.tar.bz2 was not found on the server >>> Downloading ftp://download.uk.kde.org/pub/kde/kde/stable/3.0.1/src/kdemultimedia-3.0.1.tar.bz2 Error: A file called kdemultimedia-3.0.1.tar.bz2 was not found on the server >>> Downloading ftp://download.au.kde.org/pub/kde/kde/stable/3.0.1/src/kdemultimedia-3.0.1.tar.bz2 Error: A file called kdemultimedia-3.0.1.tar.bz2 was not found on the server >>> Downloading ftp://download.at.kde.org/pub/kde/kde/stable/3.0.1/src/kdemultimedia-3.0.1.tar.bz2 Error: A file called kdemultimedia-3.0.1.tar.bz2 was not found on the server >>> Downloading ftp://ftp.fh-heilbronn.de/pub/mirrors/kde/stable/3.0.1/src/kdemultimedia-3.0.1.tar.bz2 Error: A file called kdemultimedia-3.0.1.tar.bz2 was not found on the server >>> Downloading ftp://ftp.sourceforge.net/pub/mirrors/kde/stable/3.0.1/src/kdemultimedia-3.0.1.tar.bz2 Error: A file called kdemultimedia-3.0.1.tar.bz2 was not found on the server !!! Couldn't download kdemultimedia-3.0.1.tar.bz2. Aborting. !!! emerge aborting on /usr/portage/kde-base/kdemultimedia/kdemultimedia-3.0.1.ebuild .
KDE 3.0.1 isn't released yet, that's why it's masked.. It will be available the day of the official release.