ahn deh-pee duh
Here's a breakdown:
* ahn: Like the "on" in "gone"
* deh: Like the "day" in "day"
* pee: Like the "pee" in "peel"
* duh: Like the "duh" in "dull"
The emphasis is on the first syllable, "ahn."
Let me know if you'd like to hear it pronounced!