Is there a sutta you would like to have recorded in Pali? Then add it to the list here:

Dipa I would find to be particularly useful, as it would be a great learning aid for pronouncing pali  terms associated with 9 samapatti, as well as the 16 steps of anapanasati. 
The Beauty Queen is one of my favorite suttas.
SN 54.008 Dīpa: The Lamp (english was 13min audio)
SN 36.006 Salla: The Arrow (english was 7min)
SN 47.020: Janapadakalyāṇī (Beauty Queen) (english was 2min)