Is the one who posts a song for the purpose of language learning burdened with the sin of listening to it, especially since all who listened to it are non-Muslims?

Listening to and spreading music is forbidden, even if the intention is to learn a language, due to the sin incurred by the perpetrator and by whoever listens to it, whether Muslim or non-Muslim. However, whoever repents sincerely, Allah accepts their repentance and erases their sin, for the Prophet, peace and blessings be upon him, said: "The one who repents from a sin is like one who has no sin." Part of complete repentance is deleting any music that was spread. If one is unable to do so, it does not harm them as long as they are repentant.