There is so much quiet, soothing music and nature sounds to be listened to. Some of what I have on CD can't be found on Youtube. I have listened, off and on for years, to soma.fm's Drone Zone and have heard some utterly otherworldly music.
An example is Madrigals of The Rose Angel by Harold Budd and Brian Eno (look both of them up and listen to some of their work):
[ame]http://www.youtube.com/watch?v=u8bK67_lJ54&index=3&list=PLDql_Y6ISXUH7c2Gv_jmHcOAo2k1HoMvo[/ame]
Next to it, on the right hand side, click on and listen to Juno. It is beautiful.
Purely by chance, I bought this CD way back when I was in the Classical Music Club. I have not regretted it. Listen to Erik Satie, Gymnopedie No. 1:
[ame]http://www.youtube.com/watch?v=S-Xm7s9eGxU[/ame]
If you can find her CDs, try Carol Rosenberger. She plays piano and has some really nice quiet relaxing music. I can't find a good example on youtube. Maybe no one has uploaded anything yet.
Back when I was buying music, the Narada label had lots and lots of interesting music. Classics combined with the sound of the ocean, or a flowing stream, a nice thing to listen to.
I really like to listen to the nature sounds, and have some bookmarked.
Edit to add: I don't quite get the painting on the Satie selection. Just ignore it and listen.