I have extracted, tested and run the Nokia Music Windows Phone application that comes with the new Lumia Windows Phones, it's a great app and it all seems to work as it should. The video below shows how it runs on my HTC Trophy.
The Nokia Music v188.8.131.52. XAP file is available for download below and should work on all unlocked Windows Phones. It shows an update available through the Marketplace but doesnt update, as I assume it's because it's not officially available! It's not considered warez as it's a free application.
Edit: Now updated with regional variations for the UK, USA, Germany, France and Italy.
Click on the region variants below to download:
Working version of Nokia Music 1.6 can be found here at MULTIUPLOAD
Nokia Christmas calendar countdown app can be found here at MULTIUPLOAD
Please give full credit to this site if linking through, thanks Boz.