I've setup a page so that when you click on a link it will go to the specific action followed by the id of what was clicked on.
For instance, if I had a list of albums and clicked play on an album with an id of 2 it would go to www.mysite/albums/play/2.
I have this working as I would like it, however, when I'm in the playAction() method in the controller, how can I get the ID of the specific album I chose?