You can download Buddhist pirith chanting in Pali by visiting following links (websites).
1. Download or Listen separately as mp3 files from prith.org
Pritih.org has sperate links to download different chantings separately.
Maha Piritha http://pirith.org/download/MahaPiritha.mp3
Seth Piritha: Part 1 http://pirith.org/download/SethPirith1.mp3
Seth Piritha: Part 2 http://pirith.org/download/SethPirith2.mp3
Pirith full collection can be found here:
2. All Pirith as a zip file in Mediafire
3. Pirith Recordings (MP3) from Buddhist Vihara Victoria, Australia
Maha Piritha / Pirith / Paritta Recording (MP3) recorded at Siri Vajiranana Dharmayatanaya Maharagama can be found on this site: