Hmm, What do you mean exactly. Like i use the Sony walkman app and after going from deep sleep , all i have to do is hit play. Automatically indexes everything each time something new is added but never every time.
Try it out , heres the apk
http://www.apkmirror.com/apk/sony-mobile-communications/walkman-music/walkman-8-5-3-2-android-apk-download/