I can help you out with music.
You see, there are number of mp3 giving sites makes musicpleer, mymp3song,mp3goo etc...But these sites have malwares hidden in links.
So go to YouTube, copy the link of a song, go to mp3converter and convert the link to mp3.
You can do the same by putting mp4 instead of mp3 in onlinevideoconverter to get un-copyrighted videos.
As for images, you have photobucket, pinterest, Getty images and imgur.
But all these come with watermarks and to remove the watermark you're supposed to pay a subscription.
No matter which website you go to, you'll never escape watermarks.
But googling images might help because most images in the front row have no watermarks.
These are shot by professionals who sell their first photos for free.
But pixabuy, unsplash and pexels are some websites that offer copyright free images.
The stronger a light shines the darker are the shadows around it.