I'm surprised this story hasn't gotten more comments - this was one I very very much enjoyed. Usually I'll listen to a story, have my opinion, but then only think about it again at most once, but Songs for Dead Hearts stuck with me for some reason. The selfishness we have when it comes to how we deal with others was deeply apparent - the family willing to cause their son enormous pain just to alleviate their own guilt (which sounds so very absurd when written out, but rang disturbingly true), and the husband's lies to his wife which he claimed were to save her pain, but in reality were all about him saving face.
I feel that, for me, horror is successful when it deals with an element of ourselves that we would, in an ideal world, be able to defeat and makes that element manifest as a monster or a spell or a demon or a natural disaster, etc etc., and for me Songs for Dead Hearts succeeded with that element. And I enjoyed the prose, too.
I've been listening to all three 'pods for a few years, and have found that when I really like the story at Pseudopod, I really like the story, and as someone who does not generally enjoy horror (in film at least), that has been an interesting realization.