I understood your problem, I hoped from putting Totalmix executable into the autostart folder, that the (already loaded) program gets perhaps a trigger to open. But ok, if you do not want to try out ... was just an idea.
What about cleaning-up your taskbar icons then ? You can hide the stuff that you really do not require and configure it to show up only on messages. I think this is the 1st step you should do.
Next what I do is, that I sort them manually, you can do this by clicking onto an icon, press and hold left mousekey and then move it to where you want.
The 3 leftmost icons are for me: Totalmix, UFX USB Driver Panel, UFX Firewire Driver Panel
This way you have those icons wonderful visible and always at the same location, I never have to "search" for those.
BR Ramses - UFX III, 12Mic, XTC, ADI-2 Pro FS R BE, RayDAT, X10SRi-F, E5-1680v4, Win10Pro22H2, Cub14