PlaySoundFile() limitations

[Trololol]

I had an old addon that I have used since Wrath of the Lich King. It still works perfectly fine, however it seems like I can now only play about ~6 sounds at any given time with the function PlaySoundFile. I made a macro that played 3 sound files, and I could only press it twice at a time. This limit as far as I know has only been introduced since Cataclysm.
With developing addons that require more than 6 sounds played at a given time, is there any way this limit can be changed at all?