If, for any reason, you want to manipulate with the Call Recordings on your system, they are located at the following folder:
/opt/pbxware/pw/var/spool/asterisk/monitor/
They have the same name as is the Unique ID of the CDR they are associated with, so locating them among many in above folder should be easy if you find the Unique ID in CDRs menu in PBXware GUI.