I am using a Apple iPhone. Have a the most recent version of WalkOut Songs app and I am using the text to speech function. When it is announcing the players name and number it is very low, I tried to figure out a way to raise the volume and there’s nowhere on the app to amplify that. My phone and speaker are both all the way high and the announcement portion sounds very low compared to the walkout song. Please help. Also, I saw someone people use announcement files, how do those work ?