The collection consists of audio recordings (in Arabic) of sermons, lectures, speeches, recitations of the Qur'an (Koran) and poetry, interviews, radio broadcasts, and conversations, pertaining to Islam, in particular the fundamentalist perspective, and the Arab world. Over 200 speakers, primarily clerics, from over a dozen countries in the Middle East, Indian subcontinent, and Africa, are represented, documenting the views of a range of Jihadi, reformist, and moderate Islamic religious leaders. Only a few of the speakers are identified, including Osama bin Laden. The topics covered are wide-ranging and include the Qur'an  Islamic jurisprudence, religious obligations and practices, mujahideen, Jihad, religious instruction, women, marriage, divorce, roles and responsibilities of husbands and wives, youth, death, extremism, secularism, evangelical Christians, Jewish people, and events and conflicts in the regions represented. The recordings date primarily from the 1980s to 2000, although some date from as early as the 1960s. The recordings are comprised of commercially-produced releases, copies of commercially-produced releases, and amateur recordings.