IUSE=""
 DEPEND=">=media-sound/jack-audio-connection-kit-0.100
> =dev-lang/python-1.5.2
        media-libs/libsndfile
        =x11-libs/gtk+-1.2*
> =dev-libs/libxml-1.8.17
> =media-libs/libsamplerate-0.1.2"
 src_unpack(){
    unpack "${A}"
    cd "${S}"
#  A libglade tar-ball is included in ceres. However, running make inside 
#  the doc directory of libglade fails,
#  saying that a program called "libglade-scan" can't open display :0.0
#  This problem is solved by using Xemake. However, when doing a make 
#  install in the doc directory of libglade,
#  the following error occurs: open_wr: 
#  /usr/share/ceres/share/gnome/html/libglade
this is a sandbox error, it won't occur on my box,
but you get this error so I include your latest ebuild.
One last question, do ceres really need
libsamplerate-0.1.2 or does it a older one also?