Most of the music anyone wants these days can be found in MP3 format. Which is great! I have abandoned all the trappings of the physical world for the digital one. I do no but my music from any physical store and in fact I am trying to figure out what to do with my current set of CD coasters.
There is one thing though that this terrestrial disc has over its electronic counter part, the inlay card! The list of musicians, singers, equipment, recording studios, producers, lyrics, etc. Could an MP3 have a simple link to an electronic inlay card, maybe it could stuffed in one of the meta tags that no one seems to use.