A Firewall is "security" software that keeps outsiders from breaking into your
network. Firewalls are primarily used to prevent "hackers" from accessing your
PC hard drive while you're on the Internet. The greatest risk of this is when
the IP address for your Internet connection is static, such as when using a
DSL or cable modem. 

Since these devices typically maintain the same IP address to the outside 
world, and are always on, they make it easier for hackers to return to the 
same address until they've figured out a way to "break in". For this reason, 
a firewall is typically used between the DSL or cable modem to prevent 
unauthorized users from accessing your network from the outside.

      If a firewall is running on a network PC that contains music for 
      AudioTron, the firewall should be set to pass AudioTron's IP address.
      Otherwise, it will treat AudioTron as an "unauthorized user" and prevent
      it from accessing music files in the PC's Shared directories.  To do 
      this, follow the instructions supplied with your firewall product.

      The same holds true for the firewall built in the OS if you're using XP.
      Right click on Network Places > Properties > Local Area Connections > 
      Properties > Click the Advanced tab...  

      Linksys products also include a software utility "Zone Alarm" that may
      get in the way of accessing files on the AT. 

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