Install Silverlight(Pipelight) on Debian Wheezy:

Run the following commands as root:
apt-key add Release.key

Add line to /etc/apt/source.list:
deb ./

Run commands as root:
pipelight-plugin --update
apt-get update
apt-get install pipelight-multi
pipelight-plugin --enable silverlight

Iceweasel was the only browser where I had success !

I got the guide from this Site.
It contains guides for ubuntu, Arch Linux, Fedora, OpenSuse and other distros

If your homedir is located on a network drive you must move the folder ".wine-pipelight" to a local drive. Then make a symlink on your homedir to the older you just have moved and reinstall pipelight