How to determine the stream content type of a stream?

Question

linux

There is a list of 200 thousand links to the radio stream. You need to check each link for performance. In this case, all links give out:

~$ curl -I http://nightradio.ru:8000/nonstop
HTTP/1.0 400 Bad Request
Content-Type: text/html

In fact, the link is working, but it is not known whether it is suitable as an audio stream.
php is undesirable, you should try to check it with a standard set of linux utilities.