Any video you put up yourself (into your own “Channel,” as YouTube calls it) that uses your own music will get you 100% of your earnings. Audiam takes nothing. Zero. 0%. But we won’t know it’s yours unless you tell us. See this section of the FAQ.
Audiam has a 25% administration fee of whatever it collects from YouTube for videos using your music outside of your “channel”–that’s everyone except you. The rest goes to you.