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diff --git a/cinelerra-5.1/cinelerra/aedit.C b/cinelerra-5.1/cinelerra/aedit.C
new file mode 100644
index 00000000..b6aa0268
--- /dev/null
+++ b/cinelerra-5.1/cinelerra/aedit.C
@@ -0,0 +1,82 @@
+
+/*
+ * CINELERRA
+ * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include "asset.h"
+#include "edits.h"
+#include "aedit.h"
+#include "cache.h"
+#include "edl.h"
+#include "edlsession.h"
+#include "file.h"
+#include "filexml.h"
+#include "indexfile.h"
+#include "mwindow.h"
+#include "patch.h"
+#include "mainsession.h"
+#include "trackcanvas.h"
+#include "tracks.h"
+
+
+AEdit::AEdit(EDL *edl, Edits *edits)
+ : Edit(edl, edits)
+{
+}
+
+
+
+AEdit::~AEdit() { }
+
+int AEdit::load_properties_derived(FileXML *xml)
+{
+	channel = xml->tag.get_property("CHANNEL", (int32_t)0);
+	return 0;
+}
+
+// ========================================== editing
+
+int AEdit::copy_properties_derived(FileXML *xml, int64_t length_in_selection)
+{
+	return 0;
+}
+
+
+int AEdit::dump_derived()
+{
+	//printf("	channel %d\n", channel);
+	return 0;
+}
+
+
+int64_t AEdit::get_source_end(int64_t default_)
+{
+	if(!nested_edl && !asset) return default_;   // Infinity
+
+	if(nested_edl)
+	{
+		return (int64_t)(nested_edl->tracks->total_playable_length() *
+			edl->session->sample_rate + 0.5);
+	}
+
+	return (int64_t)((double)asset->audio_length /
+		asset->sample_rate *
+		edl->session->sample_rate + 0.5);
+}
+