Sony SRS-X99 Help Manual page 240

If [More streaming options] does not appear, select [Turn on media streaming...]. Then select [Turn on media
streaming] on the [Media streaming options] screen.
4. If all devices are allowed, select [Next].
If not all devices are allowed, select [Allow All], then the [Allow All Media Devices] screen appears.
Select [Allow all PCs and Media Devices].
5. Check that [Music] is set to [Shared], then select [Next].
6. Select [Finish] to close the screen.
7. Select [Stream], then check that [Automatically allow devices to play my media...] has been ticked.
The setting is now complete. You can listen to music stored in your PC, using your smartphone/iPhone.
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