I am having trouble with the desktop software and my tablet.
The BB software runs but is not accessing the tablet.
When I connect the tablet to the USB port, I can hear that sound which means a connection is established. I even tried a couple of other
ports and am finding the same problem.

Moved to PlayBook section.

Can you see the PB if you go to My Computer? Assuming you're using a PC...

Are you using the latest version of BlackBerry desktop software?

Windows 7?
Do you have WiFi turned off? When you connect, do you see a small window in the top right (Loading Drivers)? Does it even show up as connected under devices (in Windows?)

Have you tried going to the Task Manager (Ctrl+Alt+Del) and closing all RIM related services and processes? Then run Desktop Manager again and connect your PB.