Call Recorder for Skype will automatically record only 2 audio tracks. One audio track is for the local caller and one is for all remote caller(s). Call Recorder for Skype does not have a feature to record more than 2 audio tracks separately.
Call Recorder for Skype can record up to 4 separate video tracks with the multi-track recording option. To do this ensure that "Multi-track" is picked in your Call Recorder Settings, which can be accessed by click the "gear" icon next to the record button on the main Call Recorder control panel. Multi-track is the default setting.
Note: The limitation of 4 video tracks includes your own video.
See this article for instructions on How to work with multi-track recordings, for details on how export and access the individual tracks.