If it only freezes when you pick Pokemon Trainer, that implies there's something wrong with one of your Pokemon Trainer textures or your CSPs or something, not the music... I'm pretty sure the game doesn't load the music until you've picked your stage, so unless I'm mistaken, there's no music-related reason for it to freeze before that -- unless there's something wrong with your menu music.
How are you loading your stuff? Riivolution, SD Loader, ISO...?
That's the thing, it only goes ERRRRRR when I enable music hacks.
I use the NTSC Version of brawl and I load my hacks through Gecko.
(Codes are in the gct. format)
I use texture hacks, colored shields, some stage hacks, 8-minute + 3 Stock default settings, a slight arrangement of character boxes in the character selection screen, endless replay recording time with the Nicknames shown, No-restricting camera, and that's about it.
From what I've noticed the game will go ERRRRRRRRRRR when I select certain characters. (Before I click them or after.)
Like now every time I click the default color of Samus the game goes ERRRR>
(I'm using a Master Cheef color hack which makes Samus green and I have both the PCS and the PAC file for all of Samus's colors.)
Then there's times where the game will freeze during the 3-....2--...1... ERRRRRRRRR.
I'm thinking it's a character's fault or something.
My only questions are if the "FitMotion.pacs or the Fit(Name).pacs" might effect the loading of the game. (Most of them are just color swaps for certain character's weapons.)
My last question would be if I only need the "PAC" files for the characters with Transformations? (I've noticed that if I add pac files to other characters I can see the texture hacks outside of Offline Versus. I.E Subspace, Online, and in Multi-man.)
Is this a good idea to do or does it also increase weary-ness to where the likely hood of it going ERRRRRRRRRRRRRRRRR and freeze up?