I am making a trivial jukebox and I downloaded the C#id3 library so that I could get the names and tracks from the mp3files without having to add them manually however it is a .sln file like any other and I can’t find any instructions on how to add it as a library without being a .dll and id rather go to the dentist than ask stack overflow

I haven’t looked at this library. But try compiling it and it should create a dll. Another option is adding the project inside that solution and add a reference to it from your project.

I was thinking of doing that but there are 7 projects that make up the solution and I’m not sure which is the one I need. To build it into a dll do I go through a similar process to building it as an exe?
Just build it

Alternatively, you can add the project you need to your solution (Right-click solution > Add > Existing project) and reference that in your project (Right-click dependencies > Add project reference).

Why did you download a solution? Nuget has something called ID3, try installing that using the nuget package manager first before you try compiling anything yourself.

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