Here's one thing that seems to work for me. I saw this tip on some forum. I'm not sure if it's my imagination or not, but things sound better when I do this:
Once JRMC is running, open Task Manager, Shift to the 'Processes' Tab, right-click on the Media Center (JRMC) process, select 'Set Priority', choose 'Highest'.
In Win 7, we need to do this every time we start the computer (the priority defaults to 'Normal'). There is some way of setting it permanently to 'Highest', but it was too much work, and getting back to default seemed to be an even bigger hassle, so I didn't try it.
Once JRMC is running, open Task Manager, Shift to the 'Processes' Tab, right-click on the Media Center (JRMC) process, select 'Set Priority', choose 'Highest'.
In Win 7, we need to do this every time we start the computer (the priority defaults to 'Normal'). There is some way of setting it permanently to 'Highest', but it was too much work, and getting back to default seemed to be an even bigger hassle, so I didn't try it.