This app was mentioned in 1 comment, with an average of 4.00 upvotes
スマホにラジオのアプリ入れときなよ
https://play.google.com/store/apps/details?id=jp.radiko.Player&hl=ja
https://itunes.apple.com/jp/app/radiko.jp/id370515585?mt=8
http://www3.nhk.or.jp/netradio/app.html