Hi Stewart,
You can go through the following document to setup the Silent Monitoring and Call Recording on Jabber devices:
http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/jabber/10_6/CJAB_BK_C56DE1AB_00_cisco-jabber-106-deployment-and-installation-guide/CJAB_BK_C56DE1AB_00_cisco-jabber-106-deployment-and_chapter_010010.html#JABW_TK_S2359FBF_00
The above document gives you a brief about the procedure involving appropriate recording/monitoring application. The configuration also depends on which Call Manager version you are using. Let me know if you face any problem with the mentioned configuration.
HTH