Just for fun and some training I put together a simple music player using Qt and Phonon.
As I probably will not have the time to polish out its edges/develop it any farther, feel free to download its code (to study or to develop it your self). :D
"Source on Qt-Apps":http://qt-apps.org/content/show.php/Vulcano+Player?content=132963
[edit: fixed link / chetankjain]