Amazon Music prime streaming doesn't work

I've subscribed the maintainer of Amazon cloud Player integration - Michael Mims.

Michael, could you take a look at this issue?

This might be the cause. The URL sandbox also applies to flash objects, so it might have to be fixed to allow these flash objects:

Nuvola Debug webbackend.vala:242: Widget blocked: https://images-na.ssl-images-amazon.com/images/G/01/x-locale/common/login/mercury9._CB372126632_.swf?value1=X78-6085475-0088262:1403646264&vip=1
    Nuvola Debug webbackend.vala:242: Widget blocked: https://images-na.ssl-images-amazon.com/images/G/01/digital/music/player/ZeitgeistSamplePlayer._V363841863_.swf
    Nuvola Debug webbackend.vala:242: Widget blocked: https://images-na.ssl-images-amazon.com/images/G/01/digital/music/uploader/UploaderIntegration-0.4.6._V384664534_.swf
    Nuvola Debug webbackend.vala:242: Widget blocked: https://images-na.ssl-images-amazon.com/images/G/01/digital/music/player/web/DigitalMusicFlashPlayer._V349369472_.swf

if i just un-sanbox all SWFs by appending |.*\.swf
to sandbox patter then it works, yes
WIth the exception of:
State: paused. Song info: [null song] by [null artist] from [null album]
It does not detect play/pause state as well as artist/song infos
Prev/Next bindings do work though

Clarification: The above does not work if I play from one of the "Prime Playlists"

Everything seem to work if I just play something via Albums/Artists in my library

The new sandbox discussed in #1333906 resolves this issue. I'm not sure if the url will change for other locales (I'm in the US) or not so for the time being the pattern is just: https://.*ssl-images-amazon\..*

For some reason the player metadata changes based on whether the song is playing from your library or from a Prime Playlist. I have a new integration that handles this and will include it with the sandbox update.