diff -aur -x .o -x '~' old/advancemame-0.78.1/advance/osd/emu.h new/advancemame-0.78.1/advance/osd/emu.h
--- old/advancemame-0.78.1/advance/osd/emu.h	2004-01-13 17:54:51.000000000 +0100
+++ new/advancemame-0.78.1/advance/osd/emu.h	2004-01-21 03:23:58.000000000 +0100
@@ -398,6 +398,7 @@
 	adv_bool video_flag; /**< Main activation flag for video recording. */
 	adv_bool sound_flag; /**< Main activation flag for sound recording. */
 	unsigned video_interlace; /**< Interlace factor for the video recording. */
+        adv_bool record_overwrite; /**< Flag to allow overwriting of recordings. */
 };
 
 struct advance_record_state_context {
diff -aur -x .o -x '~' old/advancemame-0.78.1/advance/osd/record.c new/advancemame-0.78.1/advance/osd/record.c
--- old/advancemame-0.78.1/advance/osd/record.c	2004-01-13 17:54:51.000000000 +0100
+++ new/advancemame-0.78.1/advance/osd/record.c	2004-01-21 03:25:55.000000000 +0100
@@ -902,7 +902,8 @@
 	snprintf(path_wav, size_wav, "%s/%.8s.wav", context->config.dir_buffer, mame_game_name(game));
 	snprintf(path_mng, size_mng, "%s/%.8s.mng", context->config.dir_buffer, mame_game_name(game));
 
-	if (access(path_wav, F_OK)==0 || access(path_mng, F_OK)==0) {
+	if ( (! context->config.record_overwrite ) &&
+             (access(path_wav, F_OK)==0 || access(path_mng, F_OK)==0)) {
 		do {
 			snprintf(path_wav, size_wav, "%s/%.4s%04d.wav", context->config.dir_buffer, mame_game_name(game), counter);
 			snprintf(path_mng, size_mng, "%s/%.4s%04d.mng", context->config.dir_buffer, mame_game_name(game), counter);
@@ -1112,6 +1113,7 @@
 	sncpy(context->config.dir_buffer, sizeof(context->config.dir_buffer), conf_string_get_default(cfg_context, "dir_snap"));
 	context->config.sound_time = conf_int_get_default(cfg_context, "record_sound_time");
 	context->config.video_time = conf_int_get_default(cfg_context, "record_video_time");
+	context->config.record_overwrite = conf_bool_get_default(cfg_context, "record_overwrite");
 	context->config.video_flag = conf_bool_get_default(cfg_context, "record_video");
 	context->config.sound_flag = conf_bool_get_default(cfg_context, "record_sound");
 	context->config.video_interlace = conf_int_get_default(cfg_context, "record_video_interleave");
@@ -1131,6 +1133,7 @@
 {
 	conf_int_register_limit_default(cfg_context, "record_sound_time", 1, 1000000, 15);
 	conf_int_register_limit_default(cfg_context, "record_video_time", 1, 1000000, 15);
+	conf_bool_register_default(cfg_context, "record_overwrite", 0);
 	conf_bool_register_default(cfg_context, "record_sound", 1);
 	conf_bool_register_default(cfg_context, "record_video", 1);
 	conf_int_register_limit_default(cfg_context, "record_video_interleave", 1, 30, 2);