I did a registry clean about a month ago, and since then I get this annoying pop up every time I start my computer. It says the TrayApp disc needs to be inserted. I've searched online and found that it's usually when their is a problem with HP Photosmart software being removed. I checked it and it was stil there, but I went ahead and downloaded a copy, and the service pack. I uninstalled the original software and reinstalled the new copy and service pack, and no dice. It still keeps popping up. I looked up simply TrayApp and there was a program that said it was the TrayApp installer. I loaded it, but it hasn't helped either. it's not a HUGE concern, you just have to drag and drop the box out of the browser window, but I'd really love to have it simply fixed.
I ran into this issue about a month ago with a user when installing a new HP all in one. TrayApp was the first application that tried to install itself on boot followed by WinScan and then PhotoGallery. I used the Windows Installer fix below to solve the issue.
I chose to let me manually fix the problem and that I was having trouble uninstalling a program. It brought up a list of applications and I was able to pick the ones that were trying to install a boot up.
This was on a Windows XP machine. I just tried to run the fix on my Windows 7 machine to verify the steps involved and I received an error so I am not sure if it will work on a Win7 machine.
Unfortunately the simplest way to embed music is built into HTML, the embed tag. I'm not sure if Flashblock or NoScript will block them. In AdBlock, you can set up a filter for *.mid and it will prevent any midi files from loading.