ld error multiple definitions

["Joël Krähemann" <weedlight gmail com>]

hello I get strange errors like

/home/link/ags/file/ags_file.o: In function `ags_file_class_init':
/home/link/ags/file/ags_file.c:32: multiple definition of `ags_file_class_init'
/home/link/ags/file/ags_file.o:/home/link/ags/file/ags_file.c:32:
first defined here
...

the application with full error output is in
http://mitglied.lycos.de/joel2001k/ags/mailing_list/ags_list.tar.bz2

I don't know what's going on I don't do anything else than in other
files I believe so
please help soon

greets