Free Music & Sound Effects @ YouTube

Steve K

Here ya go.  Down at the bottom you can read the terms & conditions, but it seems pretty reasonable, okay to use in your animations.

https://www.youtube.com/audiolibrary/music

https://www.youtube.com/audiolibrary/soundeffects

WendyLuvsCatz

I have a playlist where I have been making video clips for various Youtube Audio Library tunes and monetising them

just because

mind you not making much so far

Mistara

it wont let me monetize, not enough views. mebbe more nviatwas on plinths

sony acid and sony music came with some royalty free tracks.  magix now.