diff -ur gnusound-0.7.5.orig/configure.ac gnusound-0.7.5/configure.ac
--- gnusound-0.7.5.orig/configure.ac	2008-07-06 11:03:19.000000000 +0300
+++ gnusound-0.7.5/configure.ac	2009-07-27 11:47:29.000000000 +0300
@@ -180,7 +180,7 @@
    use="$use -lgsm"], [], [])
 
 dnl FFMPEG
-AC_CHECK_HEADER([ffmpeg/avformat.h],
+AC_CHECK_HEADER([libavformat/avformat.h],
   [AC_CHECK_LIB([avformat], [av_open_input_file],
     [AC_DEFINE(HAVE_FFMPEG)
      echo "-lavformat -lavcodec -lavutil -lm $use" > ${module_path}/.file_ffmpeg.cflags
diff -ur gnusound-0.7.5.orig/modules/file_ffmpeg.c gnusound-0.7.5/modules/file_ffmpeg.c
--- gnusound-0.7.5.orig/modules/file_ffmpeg.c	2008-07-05 19:00:26.000000000 +0300
+++ gnusound-0.7.5/modules/file_ffmpeg.c	2009-07-27 11:48:57.000000000 +0300
@@ -37,8 +37,8 @@
 #warning "Not building ffmpeg support."
 #else
 
-#include <ffmpeg/avformat.h>
-#include <ffmpeg/avcodec.h>
+#include <libavformat/avformat.h>
+#include <libavcodec/avcodec.h>
 
 struct ffmpeg_data {
     AVFormatContext *format_context;