Hello, getting back to replying. Last night, after reading the last few posts, I opened Activity Monitor and Media Center 30. MC is working fine in idle mode and my swap file is stable. The solution could be that I have too many open programs. Currently I have 14 running. MC 30 uses no more than 1GB. I used Media Center in the background while I worked on projects. Several times my computer started to shut down programs to save memory and from my view it looked as if MC 30 was the culprit. Program interaction, exclusive memory, Mac OS issues, and too many open programs are more likely to be sources.
I'll play music this evening and watch Activity Monitor's progress. I am keeping my browser open (Google Chrome) as a test; it uses a few gigabytes of memory and is one of the biggest memory hogs. Also closing a few programs during the test.
I bought the Master License for Media Center 31. I haven't used it to test in Windows. I will continue with my investigation on the Mac.
-- Tom