This mp3 player looks and operates just like an iPod. It uses XML, Flash and JavaScript.
You can see it in action here: http://whatasavage.com/
Click a song in the reviews column on the right and it will play in the player (may need to scroll down to see)
Notice that the songs (on the right) use JavaScript to load the song into the mp3 player. Makes it nice for blogs that want to use Podcast.
You can then use the click wheel just like an iPod. Even click the center button (middle of wheel) to move the position in the song.
If you like it, you can get one here: http://www.search-this.com/tools/
enjoy,
mark