On my Google Nexus 7, I want to stream music from the Google cloud to a wireless speaker or airplay. I have found lots of apps that can stream to airplay, but none of them can see my Google music which I have uploaded to the cloud.
I found a solution to stream your Google Music to any device that is DLNA enabled. It's an android app called BubbleUPNP. What it does is it accesses your Google Music account, adds the titles to your local library (only the titles, think of them as links to the Google Music library) and then starts a DLNA server on your phone. This means that any device that can access DLNA servers can play this music, thus it now also has access to your Google Music tracks.
How to do this:
Downside is the fact that you can't "send" a track from Google Music (from your Android device) to be played on the DLNA device but you have to play it from the DLNA device directly.
Hope this helps!