See instructions on how to use the player, including adding a playlist:
If you followed the instructions and still something doesn't work for you, write to the email support[@]gdrivemusic.com
Not sure if my first comment went through, but I cannot sign into my google account, it keeps saying error and I can't bring files over from my Drive to listen to. When I click a song I want to listen to from Drive it automatically brings me to this website but it wants me to sign in. I already am signed in and I get a picture of that robot and the word Error. Any help would be appreciated.