Adhan recordings bundled with Bayt Launcher (android/app/src/main/assets/adhan/)

All from Wikimedia Commons, each marked "Own work" by its uploader. Bayt removed the silence or waiting time before
the adhan, converted them to mono Opus and evened the loudness (and ended the 2012 recording with a fade-out after the
adhan). It plays them for 5, 10 or 15 seconds with a fade-out, or whole. No other changes.

adhan_makkah2013.ogg  "Adhan, Great Mosque of Mecca - Jan 21, 2013" by Seyfula Islam, CC BY 3.0
  https://commons.wikimedia.org/wiki/File:Adhan,_Great_Mosque_of_Mecca_-_Jan_21,_2013.webm
adhan_makkah2012.ogg  "Maghrib Adhan at the Masjid al Haram, Mecca - 25 Feb, 2012" by 3omar Faruq, CC BY 3.0
  https://commons.wikimedia.org/wiki/File:Maghrib_Adhan_at_the_Masjid_al_Haram,_Mecca_-_25_Feb,_2012.webm
adhan_adam.ogg        "Beautiful adhan" by Adam-synagda, CC0 1.0
  https://commons.wikimedia.org/wiki/File:Beautiful_adhan.ogg

Licences: CC BY 3.0 https://creativecommons.org/licenses/by/3.0/ · CC0 1.0 https://creativecommons.org/publicdomain/zero/1.0/