I think you are talking about the Arc media Library:
There is more information about Arc here:
Hello @janetmbrady ...
I thought I would check in with you because we haven't heard back from you since you first posted this question on February 21st. Have you had a chance to review the above reply from @Robbie_Grant ? If so, did it help to answer your question? Or, are you still looking for assistance with your initial question? If you feel that Robbie's above response is correct, please mark it as such. But, if you are still looking for help, please post a message below so that members of the Canvas Community can help you with your question. For now, since there hasn't been any activity in this thread for quite a while, I'm going to mark your question as "Assumed Answered", but that won't prevent you or others from posting additional replies below. I hope that is okay with you. Looking forward to hearing from you soon, Janet!
Thanks for your follow up! Everything working well now. Was able to download media.
Sent from my iPhone