Earbuds are read as a private world of sound, shutting out what is around you. They are linked to focus and comfort, or to avoiding conversation and not wanting to hear something.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.