Amolto Call Recorder is a simple program for recording audio conversations on Skype and other VOIP applications. You can configure this program to automatically record calls on various applications. There is no limit on the length of audio clip. MP3 bit-rate and other settings can be configured.
Amolto Call Recorder is also available in a Premium version with features such as Skype video call recording, Skype screen sharing, screen recording, customizable of video quality, etc.