Iframe loading - Online radio player does not stop, how to fix it?

Question

Web development

Hello dear experts!
The problem is this. I launched the site "Online Radio" quite a long time ago and successfully closed it, but after a while I needed this project again, I restored the previously created backup of the site. There was such a problem that the "Online player" when you click on "play" - starts the audio stream of the broadcast, but when you click on "pause", it continues to play the stream again.
The player is added to pages in an IFrame. If you open the player file without iframe in the browser, then the player functions perfectly, both play and pause. Namely, when adding to the pages of the site in an iframe, problems begin.
In general, you can see for yourself. The site is under construction, do not scold strictly. I ask for your advice and I hope for help.
Website: beatradio.ru