For debates, definitions, book reviews/recommendations, and lecture mp3s check out click here. It will take you to apologetics315; an excellent site for audio.
For in-depth encyclopedia articles on moral philosophy covering a wide scope of moral topics check out this; you'll be taken to the Stanford Encyclopedia of Philosophy. It's all totally free content. You won't find video or audio though, only written content.
Glenn Peoples is an excellent, up-and-coming moral philosopher. So I'm including his blog in this list. Click here to read his work on moral philosophy.
Stand to Reason is a good source for commentaries and articles covering ethics. Click here to jump over there and start reading.
Below are some debates on morality and God.