Iwascoding has updated GarageTunes (http://www.iwascoding.com/GarageTunes/), a collaborative music player application for Mac OS X 10.6 and higher to version 1.1. It’s available at the Mac App Store for an introductory price of US$4.99.

GarageTunes now uses the Growl notification system to let user know when new Macs running GarageTunes appear on their local network, or when another users starts playing songs an a Mac their are using as speaker. In addition to other Macs, GarageTunes 1.1 streams music to any AppleTV (second generation) on the local network using Apple’s AirPlay technology.

According to the folks at iwascoding, GarageTunes finds all the music files on connected hard drives without the need to maintain a special library or pointing it to a certain directory. Plus, it shows all music files on other Macs running GarageTunes in the same network in a single view. Finally, any Macs on the local network can be instructed to play songs stored on any other Mac running GarageTunes.