I don't have a lot of time to perfect this for you but check this out...
I tried to use a Zen photo album with an image/graphic for each song... in this case a lyric sheet... you could use any image to make zenphoto generate a page for your song,
then in my comments section I use html to embed a .swf mp3player. the swf mp3 player has to be built separately in flash but you can load it into zenphoto using html in the comment and have it load/link to the audio file.
see link:
http://www.sargenti.org/zenphoto/Zen+Audio/littledreamerlyrics.jpg
Issue: my problem was how to get the correct path from the swf to the audio content/ mp3 so it will load the correct content. I haven't spent a lot of time on this... but you could custom build this type of thing yourself for your own visitor's ZenAudio experience. I have found Zenphoto is pretty flexible/editable if you have even marginal .html .css type skills.
I also tried to use an html tag but I could not get it to load the windows default audio player. But Zenphoto will load a .swf So maybe you could try that and then below the swf everyone could comment on the song the way they do your images.
good luck,
Dark Silence