diff -Naur libmpdemux/demux_avi.c.orig libmpdemux/demux_avi.c
--- libmpdemux/demux_avi.c.orig	Wed Oct 22 22:01:37 2003
+++ libmpdemux/demux_avi.c	Sun Jan 11 22:40:31 2004
@@ -214,7 +214,7 @@
     }
 
     pos = priv->idx_offset + (unsigned long)idx->dwChunkOffset;
-    if((pos<demux->movi_start || pos>=demux->movi_end) && (demux->movi_end>demux->movi_start) && (demux->stream->type!=STREAMTYPE_STREAM)){
+    if((pos<demux->movi_start || pos>=demux->movi_end) && (demux->movi_end>demux->movi_start) && (demux->stream->type!=STREAMTYPE_STREAM || demux->stream->seek)){
       mp_msg(MSGT_DEMUX,MSGL_V,"ChunkOffset out of range!   idx=0x%X  \n",pos);
       continue;
     }
@@ -246,7 +246,7 @@
     if(!(idx->dwFlags&AVIIF_KEYFRAME)) flags=0;
   } else {
     demux->filepos=stream_tell(demux->stream);
-    if(demux->filepos>=demux->movi_end && demux->movi_end>demux->movi_start && (demux->stream->type!=STREAMTYPE_STREAM)){
+    if(demux->filepos>=demux->movi_end && demux->movi_end>demux->movi_start && (demux->stream->type!=STREAMTYPE_STREAM || demux->stream->seek)){
           demux->stream->eof=1;
           return 0;
     }
@@ -449,7 +449,7 @@
   demuxer->priv=(void*)priv;
 
   //---- AVI header:
-  read_avi_header(demuxer,(demuxer->stream->type!=STREAMTYPE_STREAM)?index_mode:-2);
+  read_avi_header(demuxer,(demuxer->stream->type!=STREAMTYPE_STREAM || demuxer->stream->seek)?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 -Naur libmpdemux/network.c.orig libmpdemux/network.c
--- libmpdemux/network.c.orig	Mon Dec  8 15:25:32 2003
+++ libmpdemux/network.c	Sun Jan 11 21:39:31 2004
@@ -428,7 +428,8 @@
 }
 
 int
-http_send_request( URL_t *url ) {
+http_send_request2( URL_t *url, off_t pos ) {
+// Extend http_send_request with possibility to do partial content retrieval
 	HTTP_header_t *http_hdr;
 	URL_t *server_url;
 	char str[256];
@@ -455,6 +456,11 @@
 	}
 	else
 	    http_set_field( http_hdr, "User-Agent: MPlayer/"VERSION);
+
+	if(pos>0) {
+	    snprintf(str, 256, "Range: bytes=%d-", pos);
+	    http_set_field(http_hdr, str);
+	}
 	    
 	if (network_cookies_enabled) cookies_set( http_hdr, server_url->hostname, server_url->url );
 	
@@ -488,6 +494,12 @@
 	return fd;
 }
 
+int
+http_send_request( URL_t *url ) {
+// old http_send_request functionality
+	return http_send_request2(url,0);
+}
+
 HTTP_header_t *
 http_read_response( int fd ) {
 	HTTP_header_t *http_hdr;
@@ -572,6 +584,50 @@
 	return 0;
 }
 
+int
+http_seek( stream_t *stream, off_t pos ) {
+	HTTP_header_t *http_hdr = NULL;
+	int fd;
+	if( stream==NULL ) return -1;
+
+	if( stream->fd>0 ) closesocket(stream->fd); // need to reconnect to seek in http-stream
+	fd = http_send_request2( stream->streaming_ctrl->url, pos ); 
+	if( fd<0 ) return -1;
+
+	http_hdr = http_read_response( fd );
+
+	if( http_hdr==NULL ) return -1;
+
+	switch( http_hdr->status_code ) {
+		case 200:
+		case 206: // OK
+			mp_msg(MSGT_NETWORK,MSGL_V,"Content-Type: [%s]\n", http_get_field(http_hdr, "Content-Type") );
+			mp_msg(MSGT_NETWORK,MSGL_V,"Content-Length: [%s]\n", http_get_field(http_hdr, "Content-Length") );
+			if( http_hdr->body_size>0 ) {
+				if( streaming_bufferize( stream->streaming_ctrl, http_hdr->body, http_hdr->body_size )<0 ) {
+					http_free( http_hdr );
+					return -1;
+				}
+			}
+			break;
+		default:
+			mp_msg(MSGT_NETWORK,MSGL_ERR,"Server return %d: %s\n", http_hdr->status_code, http_hdr->reason_phrase );
+			close( fd );
+			fd = -1;
+	}
+	stream->fd = fd;
+
+	if( http_hdr ) {
+		http_free( http_hdr );
+		stream->streaming_ctrl->data = NULL;
+	}
+
+	stream->pos=pos;
+
+	return 0;
+}
+
+
 // By using the protocol, the extension of the file or the content-type
 // we might be able to guess the streaming type.
 int
@@ -581,6 +637,7 @@
 	int fd=-1;
 	int redirect;
 	int auth_retry=0;
+	int seekable=0;
 	char *extension;
 	char *content_type;
 	char *next_url;
@@ -701,7 +758,10 @@
 			}
 			
 			streaming_ctrl->data = (void*)http_hdr;
-			
+
+			// Check if 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);
+
 			// Check if the response is an ICY status_code reason_phrase
 			if( !strcasecmp(http_hdr->protocol, "ICY") ) {
 				switch( http_hdr->status_code ) {
@@ -756,13 +816,13 @@
 						for( i=0 ; i<(sizeof(mime_type_table)/sizeof(mime_type_table[0])) ; i++ ) {
 							if( !strcasecmp( content_type, mime_type_table[i].mime_type ) ) {
 								*file_format = mime_type_table[i].demuxer_type;
-								return 0; 
+								return seekable; // for streaming_start
 							}
 						}
 					}
 					// Not found in the mime type table, don't fail,
 					// we should try raw HTTP
-					return 0;
+					return seekable; // for streaming_start
 				// Redirect
 				case 301: // Permanently
 				case 302: // Temporarily
@@ -1121,6 +1181,11 @@
 	if( ret<0 ) {
 		return -1;
 	}
+	if( ret==1 ) {
+		stream->flags |= STREAM_SEEK;
+		stream->seek = http_seek;
+	}
+
 	ret = -1;
 	
 	// Get the bandwidth available
diff -Naur libmpdemux/stream.c.orig libmpdemux/stream.c
--- libmpdemux/stream.c.orig	Sun Aug 31 21:51:05 2003
+++ libmpdemux/stream.c	Sun Jan 11 21:47:06 2004
@@ -314,6 +314,14 @@
     // A function call that return -1 can tell that the protocol
     // doesn't support seeking.
 #ifdef MPLAYER_NETWORK
+    if(s->seek) { // new stream seek is much cleaner than streaming_ctrl one
+      if(!s->seek(s,newpos)) {
+      	mp_msg(MSGT_STREAM,MSGL_ERR, "Seek failed\n");
+      	return 1;
+      }
+      break;
+    }
+	
     if( s->streaming_ctrl!=NULL && s->streaming_ctrl->streaming_seek ) {
       if( s->streaming_ctrl->streaming_seek( s->fd, pos, s->streaming_ctrl )<0 ) {
         mp_msg(MSGT_STREAM,MSGL_INFO,"Stream not seekable!\n");
diff -Naur libmpdemux/stream.h.orig libmpdemux/stream.h
--- libmpdemux/stream.h.orig	Wed Aug 13 19:29:31 2003
+++ libmpdemux/stream.h	Sun Jan 11 22:39:26 2004
@@ -216,7 +216,7 @@
 }
 
 inline static int stream_skip(stream_t *s,off_t len){
-  if(len<0 || (len>2*STREAM_BUFFER_SIZE && s->type!=STREAMTYPE_STREAM)){
+  if(len<0 || (len>2*STREAM_BUFFER_SIZE && (s->type!=STREAMTYPE_STREAM || s->seek))) {
     // negative or big skip!
     return stream_seek(s,stream_tell(s)+len);
   }