Maasai is spoken in Kenya and Tanzania (Africa).
For more information, see SIL Ethnologue code mas.
You can purchase the Maasai New Testament in audio format from Faith Comes By Hearing.
The "JESUS" Film, based on the Gospel of Luke, has been translated into Maasai. To order, visit jesusfilmstore.org. Or order by phone from Campus Crusade at 1-800-432-1997.