ShareTool is a low-price application for remotely accessing Bonjour services on your home or office network--like music and file sharing--from anywhere you have an Internet connection. ShareTool also encrypts traffic through SSH, effectively creating a VPN. You can do nearly anything you could normally do on your own network from anywhere in the world, including watching movies from iTunes, grabbing files (with automatic compression for faster transfers), accessing your desktop and hard drive, and even initiating remote sleep and wake up.
The only potential downsides are that you have to enable remote log-in on your computer and keep ShareTool running at all times to ensure access--but the app lets you restrict available services and even bandwidth usage, and it logs all activity. Setup is extremely easy, and performance seems to be very stable. As an added benefit, ShareTool even lets you browse the Web more securely when using open Wi-Fi networks by routing all traffic through your home network.