Need Amazon Echo help! Newbie here!

[One Above All]

Does any kind souls here know if you can do the below with the Amazon Echo


save a particular mp3 into the internal storage of Amazon Echo

set the Echo to start playing this mp3 at 5:00am

this mp3 will loop continously and stop playing at 8:00pm



Can this be done with the Amazon Echo?


Does the Amazon Echo needs to be continuously connected to the Internet for it to work?

Can I run the Amazon Echo in non internet connected mode?

Thank you gently