Is it permissible to work as a voice actor in a purposeful children's channel in classical Arabic, despite the presence of music and women not adhering to the Islamic hijab on the channel?

Working in a mixed-gender channel where impermissible mixing occurs—meaning the gathering of men and women without adherence to Islamic regulations—is not permissible, except in cases of dire necessity where a Muslim cannot find any other work. It is also not permissible to participate in programs that include music, because that entails witnessing the forbidden and assisting in it. And whoever gives up something for the sake of Allah, Allah will compensate him with something better.