ㄴ가 알리다

tell someone something

In every line here the -ㄴ가 is the tail of 뭔가 'something' or 누군가 'someone', not a question ending on a verb, and 알리다 appears as 알려주다 or 알려드리다, 'to let someone know'. So what you are hearing is 뭔가 알려드릴 수 있었던 'being able to tell you something' or 누군가 알려줬으면 좋겠는 거예요, 'I wish someone would tell me'. 알려주다 is the everyday form; 알려드리다 is its polite version for an audience.

Register: polite when addressing viewers