what is an mp3tagger and how can I use it on my music blog?

[Ajebo25]

I just started a music blog last week and I heard what Music bloggers use is mp3tagger which enables them to post quickly without stress but I think that the MP3 tagger should not be hard for me to get but for some time now I have tried to get the mpetagger from every music blogger which I know but it have proven abortive, none of them will want to give me the mpetagger and it's starting to make me think that music niche is not the way for me anymore if anyone knows how I can get the mpetagger he/she should tell me please.

I also want to ask if I can merge both music anf tech niche together but some people said that it will confuse Google that I shouldn't do it but I want to hear one last advice from this forum before I decide on what to do.