Sling Media has released SlingPlayer for Mac OS X Public Beta for download.

System Requirements:
• PowerPC 600 MHz or Intel Core Duo 1 GHz
• Mac OS X 10.4 (10.3 support coming soon)
• 256MB RAM (1 GB recommended)
• 100MB Free Hard Disk Space
• 1024×768, thousands of colors display (millions of colors recommended)
• Ethernet Network Connectivity (wired, 802.11 a/b/g, or Powerline)

More info, features, and download link here.

Related articles:
Sneak preview of SlingPlayer Mac – October 17, 2006
Mac beta testers wanted for SlingPlayer for Mac OS X – July 12, 2006