That looks odd - Rhythmbox doesn't have a "configure.in" file, it uses "configure.ac". A fresh cvs checkout work fine for me.
I still get that error even after I have done: ~/bdownload/cvs-rhythmbox$ rm -r rhythmbox/ ~/bdownload/cvs-rhythmbox/rhythmbox$ date Thu Jun 8 19:52:39 CEST 2006 ~/bdownload/cvs-rhythmbox$ cvs -z3 -d:pserver:anonymous anoncvs gnome org:/cvs/gnome co rhythmbox [snip] ~/bdownload/cvs-rhythmbox$ cd rhythmbox/ ~/bdownload/cvs-rhythmbox/rhythmbox$ ./autogen.sh /usr/bin/gnome-autogen.sh grep: ./configure.in: No such file or directory grep: ./configure.in: No such file or directory grep: ./configure.in: No such file or directory grep: ./configure.in: No such file or directory **Warning**: I am going to run `configure' with no arguments. If you wish to pass any to it, please specify them on the `./autogen.sh' command line. Running ./configure --enable-maintainer-mode --enable-compile-warnings ... /usr/share/aclocal/gnome2-macros/autogen.sh: line 162: ./configure: No such file or directory ~/bdownload/cvs-rhythmbox/rhythmbox$