March 3, 2008 6:00 AMOn Friday Aspyr Media announced that Apple retail stores across the country will be holding tournaments for the recently released Mac version of Guitar Hero III: Legends of Rock. Competitors participating in the tournaments compete for the chance to win prizes such as iTunes gift cards.Competitors can sign up for each tournament on the days listed below at participating Apple retail stores. Winners will receive great prizes, including iTunes gift cards! Check with participating Apple stores for more details.Check out the list below to see when tournaments are being offered in your area, and get ready to rock out. Mall of America (Bloomington, MN), 3/1 11 a.m. 5 p.m. San Francisco (Stockton St.), 3/15 2 p.m 4 p.m. Pasadena (Colorado Blvd.), 3/15 2 p.m. 4 p.m. International Plaza (Tampa, FL), 3/15 2 p.m. 4 p.m. Crossgates (Albany, NY), 3/15 2 p.m. 4 p.m. North Shore (Peabody, MA), 3/15 2 p.m. 4 p.m. Memorial City (Houston, TX), 3/15 2 p.m. 4 p.m. North Michigan Avenue (Chicago, IL), 3/22 7 p.m. 9 p.m. Third Street Promenade (Santa Monica, CA), 3/22 7 p.m. 9 p.m. Fifth Avenue (New York, NY), 3/22 7 p.m. 9 p.m. Soho (New York, NY), 4/1 or 4/2 6:30 p.m. TBDTo learn more follow the links below.Apple Retail StoresHarmonixAspyr MediaGuitar Hero III: Legends of Rock