Just not a user friendly app. After the reply from the manufacturer, I changed the rating on the app. To the manufacturer - I'm attempting to use this for EXACTLY that. Any settings changes I make, only stay until my phone screen times out, or I exit the app. Programming changes should stay until I change them back. If I like the Music setting at all times, I should be able to keep that. Not just until the app is no longer on top, or something decides to automatically change it. Furthermore - the Bluetooth Streaming + Mic1 setting should allow me to adjust sound settings and keep them.