[Tweeters] Adding Audio to Still Images?

[Jim Betz via Tweeters]

Hi,

   Anyone experimented with adding bird calls to their bird pics? Is it 
difficult to

learn?  What software have you used?  Expensive?  Can you pretty much 
pick it

up on your own or is this one of those things that requires a lot of 
learning?

   I suspect this means 'converting an image to a video' and adding in 
the audio

track while you do that ... ???

                              - Jim in Skagit