"No Copyright Infringement Intended" is a meaningless disclaimer. Either the music is public-domain or permissively licensed and you're fine, or it's not and you're probably not.
If I were you, I'd try and find something that is Creative Commons, CC0 is best (the most permissive CC license). And then you can say in your disclaimer that the audio is CC licensed, which is ideal.
It's obviously not supposed to be a disclaimer of any legal value, judging from the sentence immediately after your quote: "I might take down these tracks or add more depending on the number of lawsuits I get slapped with". I don't particularly condone this attitude, but at least it's pretty clear. Either you slap him with a lawsuit/DMCA and the tracks will be removed or you don't and they probably won't.
Hey OP here, the tracks I used are taken from https://www.youtube.com/user/gamingsoundfx which is kinda a royalty-free stock audio library, I realise now that my statement that was funny when I wrote it might come back to haunt me dreams so I am gonna update it, Thanks for letting me know
The DMCA process with GitHub and most hosting sites is very straightforward and mostly automatic, I don't see why it would be a problem. With most older works it's nigh impossible to figure out who owns the copyright anyway.
> Either the music is public-domain or permissively licensed and you're fine, or it's not and you're probably not.
If only copyright were actually that simple. The music might be, and the performance not, or vice versa. Maybe the rights were assumed to be public domain, and then a company discovers the rights in their vault. Maybe the license is permissive, but one of the many people involved never agreed to it, and that means that it retroactively isn't licensed permissively.
Regardless of intent, infringement happens. Someone making the above statement seems to think “infringement” means “plagiarism.” Also, a DMCA takedown request isn’t “being slapped with a lawsuit.”
Using language that makes one amenable to takedown requests might be fine. But it’s no defense for infringing on others’ copyrights by posting their IP without a license.
OP, take parent comment’s advice and find some appropriately licensed music.
If I were you, I'd try and find something that is Creative Commons, CC0 is best (the most permissive CC license). And then you can say in your disclaimer that the audio is CC licensed, which is ideal.