store old filename

add %{disc} to "rename"

atom

@@ -1107,6 +1107,8 @@ getDestDir() {
 		destdir="${destdir//%\{track\}/$replace}"
 		replace=$(sanitizeFile "$year")
 		destdir="${destdir//%\{year\}/$replace}"
+		replace=$(sanitizeFile "$disc")
+		destdir="${destdir//%\{disc\}/$replace}"
 	else
 		destdir+="${filename%/*}"
 	fi
@@ -1127,6 +1129,7 @@ getDestFile() {
 		tracknumber="${track%/*}"
 		destfile="${destfile//%\{track\}/$tracknumber}"
 		destfile="${destfile//%\{year\}/$year}"
+		destfile="${destfile//%\{disc\}/$disc}"
 	else
 		destfile="${filename##*/}"
 		destfile="${destfile%.*}"
@@ -1494,6 +1497,11 @@ master() {
 					"		SELECT last_change"	 	\
 					"		FROM source_files" 		\
 					"		WHERE id=$sourcefileid"		\
+					"	),"					\
+					"	old_filename=("				\
+					"		SELECT filename"		\
+					"		FROM destination_files"		\
+					"		WHERE id=$destfileid"		\
 					"	)"					\
 					"WHERE  id=$destfileid;"			\
 					>&3

doc/config

@@ -60,6 +60,7 @@ Sections:
         %{album},
         %{albumartist},
         %{artist},
+        %{disc},
         %{genre},
         %{title},
         %{track},

share/schema.sql

@@ -17,6 +17,7 @@ CREATE TABLE destinations (
 CREATE TABLE destination_files (
 	id		INTEGER PRIMARY KEY,
 	filename	TEXT,
+	old_filename	TEXT,
 	last_change	FLOAT	NOT NULL DEFAULT 0,
 	source_file_id	INTEGER,
 	destination_id	INTEGER,