CD audio is unencrypted, so nothing needs to be broken in order to copy it, unlike even the extremely weak encryption on DVDs. Is there any legal issue with making a personal copy of unencrypted media?
https://en.wikipedia.org/wiki/Format_shifting
https://www.gov.uk/government/news/quashing-of-private-copyi...
Probably due to the following, but can't find it from a quick Google:
R (British Academy of Songwriters, Composers and Authors and others) v Secretary of State for Business, Innovation and Skills [2015] EWHC 1723