Can you tell me what I can do if an idea was shared with Davison that is not patented or pending patent as of yet?

I'm assuming you are referring to http://davison.com. It appears from the website that the process for submitting an idea involves agreeing to...

The touchstone of the trademark infringement analysis is likelihood of confusion, i.e. would your use of the marks confuse a reasonable person...

For a copyright registration, what if the work contains both audio and text?

The individual elements (text, audio, and video) are definitely registrable individually, and that's probably how I would proceed. The collection...