Key for RealPlayer Plus: 0637-68-8452 Does not work well with Macintosh TCP. Open Transport 1.1 or higher recommended. To ensure that the Macintosh RealPlayer Plugin has enough memory to run properly, users need to set their browser memory requirements as follows. To change memory allocation, highlight your browser icon, select Get Info from the File menu, and change the Memory Requirements settings. For Microsoft Internet Explorer, allocate at least 8000K for memory; however, 13000K is recommended. For Netscape Navigator, allocate at least 9000K for memory; however, 12000K is recommended.