Thanks to elralfaro at deviantART.com you can make Winamp look like the yet to be released iPhone.
This is a gorgeous looking skin with built in cd-cover displayer. However, this skin does have a minor usability issue.
All the buttons in the Playlist has been removed in favour of a “Open” button in the main body. But, when you add files using the Open button, existing playlist is removed. Hence, the only way you can add media files from multiple folders (if they are not present in the Media Library) is by drag and drop. However, if you use Winamp’s Media Library this shouldn’t cause any headache.
You can download this skin from here.