Is the record from the modpack broken? I though it was just me, but i ask everyone in the server, and it seems that there is no sounds being played when it is put to a jukebox/auto-jukebox.
Sound files are client side not server side. Check singleplayer, reinstall... if it is so important for you.
Well I already tried that tho...I even forced update it.. *edit I reinstalled it again, tried it on singleplayer and even forced update it..still nope
Sorry you are having issues, I assure you that if there were something that we could do about it we would do it, but as SirWill said it's a client side problem not a server side one so it has nothing to do with us, which is backed up by the issue persisting in singleplayer. The only people who have any chance of fixing it are the mod/modpack creators.