diff -aur libmpdemux/demux_avi.c.orig libmpdemux/demux_avi.c
--- libmpdemux/demux_avi.c.orig	Tue Feb 17 14:30:44 2004
+++ libmpdemux/demux_avi.c	Sun Feb 22 20:40:04 2004
@@ -449,7 +449,7 @@
   demuxer->priv=(void*)priv;
 
   //---- AVI header:
-  read_avi_header(demuxer,(demuxer->stream->flags & STREAM_SEEK)?index_mode:-2);
+  read_avi_header(demuxer,(demuxer->stream->flags & STREAM_SEEK_BW)?index_mode:-2);
   
   if(demuxer->audio->id>=0 && !demuxer->a_streams[demuxer->audio->id]){
       mp_msg(MSGT_DEMUX,MSGL_WARN,"AVI: invalid audio stream ID: %d - ignoring (nosound)\n",demuxer->audio->id);
diff -aur libmpdemux/network.c.orig libmpdemux/network.c
--- libmpdemux/network.c.orig	Tue Feb 17 14:30:44 2004
+++ libmpdemux/network.c	Sun Feb 22 20:41:06 2004
@@ -754,7 +754,11 @@
 			streaming_ctrl->data = (void*)http_hdr;
 
 			// Check if we can make partial content requests and thus seek in http-streams
-		        seekable=(http_hdr!=NULL && http_hdr->status_code==200 && strncmp(http_get_field(http_hdr,"Accept-Ranges"),"bytes",5)==0);
+		        if( http_hdr!=NULL && http_hdr->status_code==200 ) {
+			    char *accept_ranges;
+			    if( (accept_ranges = http_get_field(http_hdr,"Accept-Ranges")) != NULL )
+				seekable = strncmp(accept_ranges,"bytes",5)==0;
+			} 
 
 			// Check if the response is an ICY status_code reason_phrase
 			if( !strcasecmp(http_hdr->protocol, "ICY") ) {
diff -aur libmpdemux/stream.h.orig libmpdemux/stream.h
--- libmpdemux/stream.h.orig	Tue Feb 17 14:30:45 2004
+++ libmpdemux/stream.h	Sun Feb 22 20:50:30 2004
@@ -229,7 +229,7 @@
 }
 
 inline static int stream_skip(stream_t *s,off_t len){
-  if(len<0 || (len>2*STREAM_BUFFER_SIZE && (s->flags & STREAM_SEEK))) {
+  if( (len<0 && (s->flags & STREAM_SEEK_BW)) || (len>2*STREAM_BUFFER_SIZE && (s->flags & STREAM_SEEK_FW)) ) {
     // negative or big skip!
     return stream_seek(s,stream_tell(s)+len);
   }