CallBurner can be configured to automatically play a tone to the other parties on a call when the call recording commences.
Follow these steps to inform other parties on a Skype call that the call is being recorded.  (These steps assume you have Skype and CallBurner installed.  If you don’t have CallBurner installed already, you can download [...]

Follow these steps to record Skype calls, using your choice of format and bitrate. (These steps assume you have Skype and CallBurner installed).
1. CallBurner defaults to MP3, 32kBit/s, 24kHz. You can alter this to use other formats and bitrates supported by the codecs installed on your machine. (Windows comes with a number of codecs preinstalled. [...]

CallBurner has built-in “Anti-Drift” technology to keep both sides of the call synchronized.
Often, the speakers and microphone device drivers on a PC have their own separate internal clocks.  Although these all run at approximately the same speed, there are slight variations.  These variations can build up over time and on long calls can become quite [...]

Follow these steps to record each party on a Skype call to a separate file.  You can use this CallBurner feature if you require each party to have their separate audio track.  One reason for recording each party to a separate file would would possibly be in the event of an interview (such as on [...]