How to identify extension # of Recording

Hi,

I have setup Inbound/Outbound call recording for 5 extensions.

All recordings are being stored in /var/spool/asterisk/monitor

-rw------- 1 asterisk asterisk  4881324 Mar  8 15:38 20100308-153253-1268080373.130039.wav
-rw------- 1 asterisk asterisk  1417644 Mar  8 15:40 20100308-153846-1268080726.130061.wav
-rw------- 1 asterisk asterisk  5813484 Mar  8 15:50 20100308-154437-1268081077.130080.wav
-rw------- 1 asterisk asterisk  2403564 Mar  8 16:03 20100308-160053-1268082053.130607.wav
-rw------- 1 asterisk asterisk  1409644 Mar  8 16:12 20100308-161044-1268082644.130635.wav
-rw------- 1 asterisk asterisk  2003244 Mar  8 16:22 20100308-162036-1268083236.130793.wav
-rw------- 1 asterisk asterisk  1693484 Mar  8 16:43 20100308-164127-1268084487.130899.wav
-rw------- 1 asterisk asterisk   549804 Mar  8 16:44 20100308-164338-1268084618.130932.wav
-rw------- 1 asterisk asterisk  2144044 Mar  8 16:51 20100308-164916-1268084956.130950.wav
-rw------- 1 asterisk asterisk  1414444 Mar  8 16:54 20100308-165233-1268085153.130968.wav
-rw------- 1 asterisk asterisk  2771884 Mar  8 16:57 20100308-165412-1268085252.130984.wav
-rw------- 1 asterisk asterisk  3075244 Mar  8 17:13 20100308-171023-1268086223.131012.wav
-rw------- 1 asterisk asterisk  1301164 Mar  8 17:17 20100308-171547-1268086547.131034.wav
-rw------- 1 asterisk asterisk  1751724 Mar  8 17:28 20100308-172650-1268087210.131057.wav
-rw------- 1 asterisk asterisk  1154604 Mar  8 17:44 20100308-174246-1268088166.131348.wav
-rw------- 1 asterisk asterisk  1164524 Mar  8 17:46 20100308-174444-1268088284.131370.wav
-rw------- 1 asterisk asterisk  1177964 Mar  8 17:55 20100308-175435-1268088875.131444.wav
-rw------- 1 asterisk asterisk  1241324 Mar  8 18:06 20100308-180454-1268089494.131532.wav
-rw------- 1 asterisk asterisk  2884524 Mar  8 18:29 20100308-182614-1268090774.131932.wav
-rw------- 1 asterisk asterisk  3153324 Mar  8 18:38 20100308-183507-1268091307.131969.wav
-rw------- 1 asterisk asterisk  2123564 Mar  8 18:42 20100308-184043-1268091643.131988.wav
-rw------- 1 asterisk asterisk  4254764 Mar  8 18:51 20100308-184658-1268092018.132007.wav
-rw------- 1 asterisk asterisk  2794604 Mar  8 18:54 20100308-185152-1268092312.132025.wav
-rw------- 1 asterisk asterisk  1649644 Mar  8 18:56 20100308-185456-1268092496.132082.wav
-rw------- 1 asterisk asterisk  1415724 Mar  8 19:00 20100308-185832-1268092712.132214.wav
-rw------- 1 asterisk asterisk   970604 Mar  8 19:01 20100308-190038-1268092838.132229.wav
-rw------- 1 asterisk asterisk  1655404 Mar  8 19:09 20100308-190725-1268093245.132245.wav
-rw------- 1 asterisk asterisk  1846124 Mar  8 19:11 20100308-190921-1268093361.132263.wav
-rw------- 1 asterisk asterisk  3818604 Mar  8 19:17 20100308-191330-1268093610.132288.wav
-rw------- 1 asterisk asterisk  1518124 Mar  8 19:19 20100308-191740-1268093860.132561.wav
-rw------- 1 asterisk asterisk  1297644 Mar  8 19:20 20100308-191920-1268093960.132687.wav
-rw------- 1 asterisk asterisk  2037804 Mar  8 19:22 20100308-192047-1268094047.132796.wav
-rw------- 1 asterisk asterisk  1168044 Mar  8 19:24 20100308-192309-1268094189.132887.wav
-rw------- 1 asterisk asterisk    57964 Mar  8 19:24 20100308-192451-1268094291.132915.wav

How can I identify which recording if for which extension ?

Any ideas ?

Thx
Vai