A job for iPhone project

Description – This is an app for the trades of Australia. They play a lot of music on the work site. We all use our phones for music plugged into radios, saved music on their phones etc. We need an app where we can connect to a central phone and have the app that Bluetooth’s/wife phone to phone so they can all play the same music off one phone (central phone). (If that makes sense). The app to show the song and band name, plus the option to download the song.