How do I merge/join MP3 files with C#?

Question

I have a library of different words/phrases, and in order to build sentences at present I add a combination of these phrases into a playlist to make a sentence. Unfortunate

Answer 1

MP3 files consist of "frames", that each represent a short snippet (I think around 25 ms) of audio.

So yes, you can just concatenate them without a problem.