I’m just hoping to send commands to the Item from Alexa. The Item itself is basically stateless, and I would not expect Alexa to know or to be able to report it.
To be more specific, PlayerItems require a separate SwitchItem for Stop functionality. Programmatically maintaining the state of the Stop Item is quite an undertaking, and it is much easier to use a stateless button. If this Stop Item can be discovered and sent an ON command through Alexa, then everything should work OK, since Stop is never sent an OFF command.
There are several bindings with Stop functionality. The new UPnP Control binding is one of them, and I was questioning the use of it with the Alexa skill.