web radio - one stream per session

I have added about 75 web radio streams to my Volumio (2.323 on a Pi2). While I am able to select and play any of the 75 web radio streams, I can only play one web radio stream per session.

If I try to change station the web radio fails. There’s a notification announcing that the new station is playing but there’s no audio. Returning to the previous station delivers the same note and the same silence.

The only solution is to reboot. Thereafter I can then again select and play a single stream. I hope I don’t seem ungrateful, but this is a very long-winded and frustrating way to change stations.