I think the limited (or no) app support is pretty clear from the user manuals. The MyCloud is not a generic Android or iOS device, with access to app stores. Neither is it a generic Linux box, where you can install Debian packages from any repository you like. It is a consumer product, using a bespoke embedded Linux to provide services.
If you are referring to this support document:
Then there is a clear list of the applicable devices at the bottom of the page.
Since you have a Gen2/v2 firmware device, there are hacks you can do to allow your device to enable the installation of apps.
Can Squeezeboxen not access a DLNA server? i.e. the Twonky DLNA server that comes built-in to the MyCloud?
