Streaming audio dropping out of iOS and Android mobile app after 7-10 min.

I built a mobile app for my 5 radio stations. Each station has a live streaming feed app downloaders can click on to hear the station through their app. Problem is that each feed (built into the app via simple html audio player and a feed: http://192.211.51.158:5515/; stops playing over the app after 7-9 minutes. Does anyone have an idea what may cause this to happen?

Thanks for your help, in advance!