hello! i'm using gnome-light on my amd64 system. the sound is configured with the alsa-kernel-driver (compiled in) and works fine. i added the Volume Applet 2.12.3 to my gnome panel to adjust the volume throught it which is possible and working. but when i right click on the applet an try to launch "Open Volume Control" (CTRL+O) i get the following error message: Failed to start Volume Control: Failed to execute child process "gnome-volume-control" (No such file or directory) here is what "emerge --info" gives: Portage 2.0.54 (default-linux/amd64/2006.0, gcc-3.4.5, glibc-2.3.5-r2, 2.6.15-gentoo-r7 x86_64) ================================================================= System uname: 2.6.15-gentoo-r7 x86_64 AMD Athlon(tm) 64 Processor 3000+ Gentoo Base System version 1.6.14 dev-lang/python: 2.4.2 sys-apps/sandbox: 1.2.12 sys-devel/autoconf: 2.13, 2.59-r7 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r1 sys-devel/binutils: 2.16.1 sys-devel/libtool: 1.5.22 virtual/os-headers: 2.6.11-r2 ACCEPT_KEYWORDS="amd64" AUTOCLEAN="yes" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=k8 -O3 -pipe -fomit-frame-pointer" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3.4/env /usr/kde/3.4/share/config /usr/kde/3.4/shutdown /usr/kde/3/share/config /usr/lib/X11/xkb /usr/lib64/mozilla/defaults/pref /usr/share/config /var/qmail/control" CONFIG_PROTECT_MASK="/etc/eselect/compiler /etc/gconf /etc/terminfo /etc/env.d" CXXFLAGS="-march=k8 -O3 -pipe -fomit-frame-pointer" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig distlocks sandbox sfperms strict" GENTOO_MIRRORS="ftp://sunsite.informatik.rwth-aachen.de/pub/Linux/gentoo http://linux.rz.ruhr-uni-bochum.de/download/gentoo-mirror/" LINGUAS="en de" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" SYNC="rsync://rsync.de.gentoo.org/gentoo-portage" USE="amd64 X a52 aac acpi alsa apache2 audiofile avi bash-completion berkdb bindist bitmap-fonts bzip2 cdparanoia cdr cli crypt cups curl divx4linux doc dri dts dv dvb dvd eds emboss emul-linux-x86 encode exif expat fam ffmpeg flac foomaticdb fortran ftp gd gif gimpprint glut gnome gpm gstreamer gtk gtk2 gtkhtml hal i8x0 icq idn imagemagick imlib isdnlog java javascript jikes jpeg junit lcms live lm_sensors lzw lzw-tiff mad matroska mime mng mozilla mp3 mpeg mythtv ncurses nls nptl nsplugin ogg openal opengl oss pam pcre pdf pdflib perl png ppds pppd python quicktime readline reflection samba scanner sdl session sockets socks5 spell spl ssl tcpd theora threads tiff truetype truetype-fonts type1-fonts udev unicode usb vcd vorbis xanim xml xml2 xmms xorg xpm xv xvid zlib linguas_en linguas_de userland_GNU kernel_linux elibc_glibc" Unset: ASFLAGS, CTARGET, INSTALL_MASK, LANG, LC_ALL, LDFLAGS, PORTDIR_OVERLAY
Emerging gnome-media should resolve the issue for you.