Hi Harleuguy,
Interpreting this post, it looks like you have never installed software on a Mac. This makes it very hard to give you all the help you need. But I will try anyway:
Step 1. Download MC22: from the download page in this forum. Downloading takes some time, so wait at least a few minutes before exiting Safari.
Step 2: Installing MC22: go to the download folder in Finder and double click on the MC22 file you've just downloaded. Then follow all steps the computer asks you to do.
Step 3: Go to the Program folder in Finder and double click on the Media Center 22 file.
Step 4: The program will open up and will start looking for your music files.
If this is not the information you need, then I'm afraid you are not clear in your question for help.
Lots of success!