OCaml-lastfm
Lastfm is a nice website to listen to music and create a social network with your musical tastes.
OCaml-lastfm
This ocaml module provides an API to audioscrobbler, the lastfm submission protocol, as well as the radio API, which allows to listen to lastfm streams/radios.
You can download the package on Sourceforge.net
You will need several other ocaml packages, read REAMDE.
You can also browse the browse the documentation online.