Mp3.com closedown was a disaster. So much valuable music was there.
Take warning: download and archive a copy of every digital asset you care about. I highly recommend the excellent utility youtube-dl[3]. I rely on it daily for copying obscure youtube videos that could disappear at any moment. Fool me twice...
[0] https://www.theregister.co.uk/2003/12/03/mp3_com_archive_is_...
[1] https://entertainment.slashdot.org/story/04/04/19/2318226/mp...