Greetings!
I am Sr Mobile app developer. I'd be glad to help you to build an Internet Radio app. Frankly speaking, this area is not new for me, I've developed more 5+ radio apps where we stream radio feeds and users can listen to station stations.
I request you to share more detail, otherwise, we can also arrange a call in order to discuss your requirements.
Looking forward to your response and hope to hear back soon from you!
Regards,