Last FM has a web widget that shows off the music tracks that you are currently listening to. There is a download and installation to read the track titles etc. It installed painlessly, asked what music player I used and was done. I had to tell my firewall it was ok. I did notice that they have covered just about every OS. So you can use it also.

The web widget is really what we are concerned with here. First you get to select the type of display. Whether you want recent tracks, weekly track list, weekly artist list etc... Then You get to pick the appearance. There are hundereds to choose from or, GET THIS, you can make your own. You can include a photo for a background, change the colors etc... This is cool! Most widgets allow some customization to the size and color, maybe text as well. But this is a step above.

As I write this, Aerosmith: No more No more live is playing and Last FM is "Scrobbling" it(sounds like a sex term) so it will display in the widget you will find in the left sidebar.
This is a fun widget if people can listen to the tracks that I am listening to. (if they want) I did notice that if you click on the widget it brings you to my Last FM page where you can see the tracks I have listened to. There you have the option to listen to, trade for or purchase each track or the entire CD. (from Amazon) I would assume this is how Last FM pays the bills and I think it's a sweet idea.

Last FM (main)
deralaand's "Last FM user page"