Aspyr has released a demo version of Harry Potter and the Chamber of Secrets, which is available now for download from Mac Game Files. The game based on J.K. Rowling’s second book and the hit movie sequel is available for Mac OS 9 and Mac OS X, priced at US$39.95. In addition, our friends at Aspyr let us know that they have released a trailer for Tony Hawk’s Pro Skater 4, which is expected to ship next month for $39.99.