To Configure Media Sharing on the Windows PC:
1. Click Start, All Programs, and Windows Media Player.
2. Click the arrow under the Library button in and then click Media Sharing (see Image 1). Windows Media Player lists all devices that have been allowed or denied access to your Media Library.
Note: Because you must explicitly grant any Windows Media Connect device access to your media library, when a new Windows Media Connect device is discovered on the network it is automatically added to the Media Sharing dialog with a yellow and black exclamation point. The yellow and black exclamation point means that you haven’t allowed or denied the device access to your media library. As a result, it does not have access to any of your media. If you own an Xbox 360 that has been turned on and is on the same network, it is listed in the Media Sharing dialog as Xbox 360 and has a yellow and black exclamation point.
3. To access your media library from the Xbox 360, click it, and then click Allow. A green checkmark appears after you allow the device to access your media library (see Image 2).
4. Once shared, Media Sharing is very configurable -- you can control what type of media is available to each Windows Media Connect device based on star rating and parental rating (such as explicit music content, TV-PG video, etc). To see how this works:
A. Click the device, then click Customize (see Image 3).
B. Note that you can only click Customize if you’ve already allowed the device access to your media library. Customize will be disabled (grayed out) if the device is already denied access to your entire media library.
To access your Windows PC’s media library from an Xbox 360, connect the Xbox 360 to the same network as the Windows PC and power it on. Windows will detect the Xbox 360 after several minutes and it will appear in the Media Sharing dialog with a yellow and white exclamation mark. Select the Xbox 360 and then click Allow. Make sure you click Apply and then OK to close the Media Sharing window. If you don’t do this, the settings will not take effect and you will receive a connection error on the Xbox 360 later on.