Its not a problem but a person will end up listening to non-jewish music
Um? How does copying music cause one to listen to non-Jewish music? If you hold copying is “OK” and want to listen to Jewish music, then copy the Jewish music from your friend. According to Hershi (who I don’t agree with), this is even legal since it doesn’t involve downloading (and Muttar since it doesn’t involve the treif Internet…)
If you feel that it IS stealing, but it is OK from a non-Jew, then you should realize that there are Jews in the non-Jewish music industry as well…