Thanks for the replies guys
I couldn't get the suggestion by UK82 to work so i must be doing something wrong there. Might try and get that to work again.
I did have some success with sorting/grouping as mentioned, using either Kind or Ext worked in separating the file types and it looked like this.
I then went into "custom panel settings" and then selected Ext from the drop down menu in sub grouping header, messed around with font, boldness etc and ended up with this.
This would have been ok if it was only for albums i have multiple versions of but it made the library look ugly to me having every album have mp3 above it. I then lowered the font and contrast to the lowest setting and got this.
it's not perfect and i will still prefer if they were completely separate but it will do for now until there is a better way to do it.