How do you ignore sync error? Also, is it syncing or on ATV hard Drive?

I am getting tons of errors that a song or video is not compatible &/or is not located where it supposed to b (fudged it up by attempting to move library to external) with ATV so it stops syncing. How do I ignore an error so it can go ahead and try to sync the rest of the library?

Also, how do you know if a movie or song is actually on the ATV? I'd like to turn my computer off so it's not running full time. Thanks

The error has to do with Audible books purchased. They work on iTunes, iPhone, iPod, but get an error trying to sync with ATV. It appears this causes the sync to stop the syncing of the Music files. It does not impact syncing of movies. Anyone had the same problem. Is there a way to suppress this?