Description: TunesUP ON AIR TunesUp is not only a music player ... It is an amazing freeware tool to listen to music, internet radio, audiobooks, podcasts etc. as background theme together with your caller while you're skyping. Tunesup lets you listen to music whilst talking to your friends. It runs in the background and you can set the sound level and microphone level so that it doesn't drown your conversation out.