I made (and tested) new configuration:
Mixer Soundcraft Compact 10 - Skype - RadioBOSS. My laptop Lenovo ThinkPad T400 and USB Soundcard Logilink.
I recorded with Stream Archive (as Podcast). But it can be used for Broadcast too, becouse of powerfull engine of RadioBOSS wich routes Main Playlist with MIC.
The Settings are very simple. You will see them in images. Also the recorded mp3 with Stream Archive (Main Playlist, Skype and myself).