How to optimize video and audio

I have a client who is a voice actor. He has 3 videos and 3 audios that he wants up on his website.

This is my first time working with videos and audios so I'm wondering what the most optimal approach would be. I would have him upload the videos to youtube but one of them is a dubbing for anime characters so he said he would get copyright striked for posting it on YouTube. Would having him post it to Vimeo be better and then I can embed it into the website? Or should I store the videos locally in the code?

As for the audio. Should I store that locally or have him upload it to soundcloud or something? He already sent me the demos and they're .wav files that are 10+ MB so I don't want to lose out on performance.