in this website you can download apps and games
for the zune HD.
the URL of the website is: http://zhdapps.com/
to sync a game or app to your zune you need to have:
-Visual C# 2008 Express
http://www.microsoft.com/express/vcsharp/
-XNA Game Studio 3.1
http://www.microsoft.com/downloads/details.aspx?FamilyID=80782277-d584-42d2-8024-893fcd9d3e82&displaylang=en
-XNA Game Studio 3.1 Zune Extensions
http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=48f7ba37-8ba7-4d16-8873-0b7f83ef77f9Duration : 0:3:42