Modded music looping crash conundrum

[Rytsar]

I've been working on making some custom music WADs for personal use within the soundtest. I've successfully made one so far that loops fairly well. However, the second one I am trying to make, Cruel Angel's Thesis, consistently crashes the game whenever it tries to loop. I believe the reason for this is because the loop is too long for the game to handle, going from the end of the song and back to the guitar and drum solo after the first verse ~1min28sec into the song, resulting in a large jump of 2mins29seconds, which is a little over half the 4min runtime. Is there a way to resolve this crash without cutting down the runtime of the loop? I really like how it turned out and want to include as much of the song as I can. I'll leave the WAD and OGG if you want to look for yourself.

 

[Rytsar]

Man. It's been well over a week since I've posted this. Either everybody is just as stumped or simply do not care about this frustrating issue. I've made several more music WADS, none of them being as long of a loop or duration as this one and all working without issue. Somebody has to know what the underlying cause or limitation is, right? Is it a Doom issue, RingRacers issue, or some other issue with the WAD or music? Again, I really don't want to shorten the loop because of how perfect it is.
Can anybody give some input on this? Please?