1. hmm.. it should be able to read mp4 files. 2. do you have any feeds set up? like facebook, twitter, AP news, rss? 3. i use foobar and it works fine for me. so you could try that. 7. ok, your choice on whether to use it or not, as i said i don't, but other people choose to. 8. it might, a little. or you could look at other cases for it on ebay and see if any of them have a place to attach a lanyard.