When loading various programs, like for music for instance, it wants to be the default player. As well as other programs for pictures, pdfs, documents and more.

Why not have the option to make all programs associate with what they can do with what is on your pc.

Have a list of the programs, and the ones you use most frequently be dropped in a favorites type section. With the rest of the programs below or listed somehow.
....

And then generate a working menu of everything on the computer.
It would scan and show what files can be opened with what programs and give the user choices quickly.

I know there is the 'open with' command, but somehow modify that to show the programs that will run the file. Instead of showing programs that will not open the file.

An Auto file association checker or something, instead of random programs that won't work with the file selected.

ChoiceEditor works great for this!

For example, I have the following ini file:

Code

[Options]
Language=0
CheckCursor=1
CheckKey=27
AlwaysChecked=1
[General]
DisplayName0=IrfanView
Editor0=C:\Program Files\IrfanView\i_view32.exe
Ext0=JPG,png,gif
DisplayName1=XnView
Editor1=D:\Applications\XnView\xnview.exe
Ext1=JPG,png,gif

I then associated jpg, png, and gif with ChoiceEditor, and a double click brings up this menu:
[attachment 1 not found]

Clicking the double arrow in the lower right lets you add another program:
[attachment 2 not found]

After you add the first program for an extension, you need to open the ini file and add a second program entry for the same extension to get the menu to show up.