Justin Spooner makes music, puts it up and writes about it here.
A note on comments
You can leave a comment to the post itself in the normal way or you can add a comment to the track by clicking in the grey bar below the waveform. It'll take you to Soundcloud but that's no bad thing.
A note on embedding
Also I just want to point out that you can embed any of these tracks anywhere you feel is appropriate by clicking the </> icon in the player, at which point you will be plied with all the necessary code.