audio book concept with row of books,vintage headphones and smartphone displaying audio wavepatterns free copy space

podcasting audiobook listening smartphone audio waveform green background literature arts culture entertainment knowledge power electronics reading learning education headset headphones copy space equipment ereader relaxation leisure activity concepts vacations media retro style red blogging ideas people table book hardcover bookstore music university technology group objects storage library negative technique page business paper information medium imagination bookseller interconnect plug archival youth