netrio

I apologize in advance if what I say is not correct, I'm not a sound format expert. Anyways, I use wavepad and switch to work on my IVR/voice prompts and MOH files. I need to save the files in g729 and ilbc encoded format. I understand that ilbc is free and I own licenses for the g729 codec. How do I add or load the codecs into wavepad? I want to see ilbc and g729 as options when I save the files. Just like when I save gsm.