We have used whoosha in our organization to create podcast episodes using voice over recordings from other sources like video or soundboard recording of live events etc.. The UI is very easy & fast which makes it one amongst my favorite tools when I use them as an editor/producer at work place where we do podcasts regularly! There are some bugs still remaining but they seem resolved now itself after few weeks so that's not much bothersome anymore if you're working directly under those guys :) Great software overall - great support team too even though its relatively newer tool (compared say lynda)! This has been beneficial while creating multiple episode outta different source files without having hassle later downloding each individual file separately into respective devices / platforms!! Have also had good experience editing existing ones once downloaded via cloud storage option available through their service provider partners such us Box et alii.