fix regression in commit 98f74a5f FS-2965

src/mod/applications/mod_conference/mod_conference.c

@@ -5046,7 +5046,7 @@ static switch_status_t conference_local_play_file(conference_obj_t *conference,
 			goto done;
 		}
 
-		if (conference->sound_prefix) {
+		if (!switch_is_file_path(path) && conference->sound_prefix) {
 			if (!(dpath = switch_mprintf("%s%s%s", conference->sound_prefix, SWITCH_PATH_SEPARATOR, path))) {
 				status = SWITCH_STATUS_MEMERR;
 				goto done;
@@ -5827,7 +5827,7 @@ SWITCH_STANDARD_APP(conference_function)
 				toplay = conference->kicked_sound; 
 			}
 
-			if (conference->sound_prefix) {
+			if (!switch_is_file_path(toplay) && conference->sound_prefix) {
 				dfile = switch_mprintf("%s%s%s", conference->sound_prefix, SWITCH_PATH_SEPARATOR, toplay);
 				switch_assert(dfile);
 				toplay = dfile;