accessTunes from Bains Software is designed to makes it easy to access your music anytime, anywhere. accessTunes starts sharing your iTunes Music Library as soon as you turn on your computer, making it available as a shared iTunes library on the local network, and accessible from anywhere in the world via the Web.
With accessTunes, you can listen to your roommate’s music even if he doesn’t have iTunes open, or listen to music from your home computer while you’re at work, even if you’re stuck on a PC.
• Starts sharing music at computer startup, even before you login.
• Shares music via iTunes Music Sharing and the Web
• Password protection for both iTunes and Web sharing.
• Can share your entire library, or just a few playlists.
• Reports what songs are currently being streamed.
accessTunes supports any Mac running Mac OS 10.3 or later. accessTunes is US$15 shareware. Users can download a copy for free that will expire after it has streamed 50 songs.
More info and download link here.