Welcome to the new year in 4 ~ G!
Sounds of rain for studying: rainymood.com/
Staples Connect has some great podcasts for students. Here are a few examples:
Peace Out (Be calm and relax)
Grim, Grimmer, Grimmest (Grimms Tales)
ExtraBlurt ~ An interactive audio game
Stories Podcast
What if World
There are ads on this site. I suggest having a parent check the site out with you before you dive in. But...it does look pretty good :)