Topic Telephone keypad tones - I have a recording on an IPod with a
telephone number.  How do I decipher - decode the tones into their
respective number on the telephone keypad?

If you local phone company offers a discount on certain chosen numbers
("Friends and Family" in the UK) then go into the interactive system
for setting up these discounted numbers, and play the recording when
asked to key the number you require. The system will usually read back
the digits to confirm what you've keyed.

Soemthing like an electricity company's automated service for phoning
in your meter reading might also work.