Sony MHC-V90W Help Manual page 8

If not all devices are allowed, select [Allow All], then the [Allow All Media Devices] screen appears.
Select [Allow all PCs and Media Devices].
Check that [Music] is set to [Shared], then select [Next].
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Select [Finish] to close the screen.
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Select [Stream], then check that [Automatically allow devices to play my media...] has been checked.
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The setting is now complete. You can listen to music stored in your PC, using your smartphone, iPhone, etc.
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