From Industrial Software Management:
Skype Recorder is a simple yet powerful application to create sound logs of your Skype calls and optionally upload records to Gmail account. You also can use Skype Recorder to record your business and home Skype calls in visible and invisible mode. With ISM Skype Recorder you can easily record your children Skype calls in invisible mode and listen to them in your Gmail account even if you are thousand miles away from your home. An additional useful way to use Skype Recorder is an interview recording. ISM Skype Recorder is a robust application producing hight quality MP3 files of small size ideal for podcasts. Optionally you can choose to not delete original Skype audio files to use them in audio post processing.