If you are running Debian Wheezy and have trouble installing the Google Music Manager from the official Google Music downloads page, here’s how you can fix it.
The current Google Music Manager depends on libc6 2.15 and Debian Wheezy has libc6 2.13. Changing the libc version is a mayor risk to the stability of your system. So what to do?
sudo apt-get install libqt4-webkit
Then install the downloaded file
sudo dpkg -i google-musicmanager-beta_current_amd64.deb
Open Google Music Manager and setup your Google account and sync folder and you’re done.
Update: Thanks to Martin for the i386 version.