Ieocg, It was Turbo! I don't know why but it was enabled so I just disabled it and everything got to back normal.
Thank you very much. You are genius!

leocg, I tried many times and failed. The message is shown as below.
The sound of silence

"We're trying to play this station, but we're having problems. Apologies.

The station's stream may be broken, or there may be a mis-match between this stream, and your device."

I don't know why because it was perfectly ok before update.

I've been using Opera browser for several years and used to be able to listen to BBC radio 4 but it doesn't work any more since recent update.
I use Windows7. I listen to the music radio such as Jazzradio.com and it doesn't work any more.
When I play Tunein, it says the error occurs but sometimes after 3 to 5 minutes it starts to play(but not BBC radio4 anymore).
Now I use firefox to listen to Tunein or BBC radio4 but I want to continue using Opera browser as I love it. It'd be very helpful if someone tell me how to fix it.