On my Motorola Droid X, for example, I get a prompt to install a Motorola Helper app.
This step will vary a bit depending on the phone manufacturer. The first time you connect your Android phone to your PC, you'll probably see a little autorun dialog box prompting you to install your phone's drivers or perhaps a small helper app that's preloaded on the phone. You just need to set up the device correctly first, and then you can drag files around in Windows Media Player and automatically sync media libraries between your phone/tablet and your PC. Of course, Android devices can sync to Windows just as any other media player can. Because they don't rely on desktop synchronization at all, you'd be forgiven for thinking that your Droid doesn't sync with Windows. Unlike the iPhone and iPad, Android devices are designed to be completely self-sufficient.
But in reality, Android devices sync easily to Windows Media Player in much the same way that the iPhone and iPad sync to iTunes, so any Windows user can transfer music between their PC and their Android phone or tablet. One of the most common complaints I hear about Android is that it lacks a desktop interface like iTunes.