We have recently started using Wistia for video hosting. They sent us a great article on practical answers to recording audio for DSLR. It is a good read and may supply some simple answers to adding/recording decent audio with your DSLR. I think we are going to purchase one of those Zoom H1 recorders to get started. We shoot with a 5D MarkII but really need an economical solution for audio. Here is the link to the article!