.wav (most but not all) -- GSM/PCM/ITU/IMA/ADPCM

.mov

.wmv & .wma (should work) - Known to work: ACELP.net

.ra (RealAudio)

.au (Sun/NeXT like from freephoneline.ca)

Perhaps in the future other types will be included.

Please send suggestions to support at PhoneConvert.com