This project should be archived. Google have released their own app.

Given there has been zero response from the developers for a number of years, and this app has basically stopped working, I think it should be archived. It was great in its hey day but is now dead IMO. I've tried contacting the developer through a few channels, and he used to work at my company, but couldn't find a recent contact, or didn't get back to me.

The website to download the app is also dead: http://www.googleplaymusicdesktopplayer.com/

Google have now released a Chrome app for Youtube Music (along with nearly all of their other products) which is working well.

Happy listening everyone.