Android phone streaming audio application built - Pause / Play Mp3 stream (with volume control)(repost)

Hello: We need an app designed for android phones that involves streaming audio. We have a mp3 audio stream already setup and streaming 24/7. The app is simple: - Play / Pause buttons, plays automatically when the app opens. - Volume Control, ability to raise and lower droid phone volume. - URL link, user can click URL at the bottom of the app screen to visit website. We would like the audio to continue playing while people use other features on their phone. That way people won't be forced to stay on the app screen in order to listen. They can go about other tasks while still streaming the audio. I've attached a screenshot for the app. Very simple. Please provide turn around time estimates in your bid and examples. Thank you. Please ask any questions.