I think doing or thinking of something you like or like to do is a way to ease your frustration causing your temper tantrums (or meltdowns). Music is one way to do it. However, they only treat your symptoms, not the underlying cause. I'd suggest try to get a sense of what "learn to direct your anger into helpful things" and "Learn to have understanding" could be in your life. Putting these in practice requires exerting great mental power, though, so I wouldn't say it's easy. But it worths it.
To me, having more control of my life, even my surroundings (people around me), seeing that I do what I have to do to have a safer / more fulfilling future is something that helps to alleviate most of my anxiety. Anxiety always makes me more prone to temper tantrums / crying fits / meltdowns / whatever. One thing is to notice that your situation is unbearable, the other is to know how to change it. But it always goes in this direction. You can't change your life (or bad life situation) without knowing (stating consciously in your mind) it's unbearable. You have to feel it with your whole existence and body before you can go to the next step.
For example, if you see you're experiencing problems at your workplace, and there seem to be no solution to it (issues with co-workers, sensory overload), it can still appear to you that you have to cling to it for good reasons. But, if you see you have more meltdowns in your life due to having to suffer from too much stress, you should consider regarding this situation as 'unbearable', and deal with it as one. You'd have to rake yourself (self-esteem) together and think of a move. Cliche, but true, "What doesn't kill you makes you stronger." (Friedrich Nietzsche, quoted countless times )
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Another non-English speaking - DX'd at age 38
"Aut viam inveniam aut faciam." (Hannibal) - Latin for "I'll either find a way or make one."