These are consonant sounds of American English according to the Merriam-Webster's Learner's Dictionary.
Make your selection with the non-yellow buttons. Recognize the sound at the beginning of the word, until the "z". The "ŋ" does not occur at the beginning of words, and in this case it is the sound at the end of the word "rung". The /ɾ/ is the sound that occurs in words where the /t/ or the /d/ are between two vowels, in an unstressed syllable, as in later. The "ʒ" only appears intermediate and is the sound of the "s" in "vision".
Use the yellow buttons and Repeat to make sure it is the sound.
If you are wrong, it repeats it to you.
You can watch an example word by selecting the links to the dictionaries.