The title says it all, when I play my custom music disc, either through the built-in game or when I export the mod, my game freezes for 5+ seconds.
I have Tried: Fixing the audio in Audacity, to make it's size smaller, not working, playing a 1 second audio just for tests, same results.
Mob custom sounds aren't causing problems, so it is only with the discs.
It is driving me mad, if anyone can help, I would be more than happy
Edit: I forgot to mention, it happens only when I play it for the first time after loading a world, for example, I play the sound, then exit, then enter the world, and play it again, it will freeze, but won't if I play it twice without exiting,
Edit 2: Also, while we are ai it, why do my biped models have the texture squished inside the model where the head should be, thanks!