What song is it?
Pepsiman's Theme
someone else had the right idea of how it would loop, but they were noticeably off beat when doing so.
basically, before it gets to the repetition of "PEPSIMAN" at 3:33, instead of letting it continue to do so, loop it straight back the first shouting of "PEPSIMAN" at 0:16. what you could possibly do is merge a segment of the first shouting of "PEPSIMAN" at 3:33 with the one at 0:16.
the song may lose its glorious outro, but the rest of the song is amazing enough without it.
hope these instructions help.