Infiniti2000 said:There are two valid 3.5 "upgrades" from 3E. One allows sonic (ala Deities und Demigods), the other doesn't. I personally recommend the one that doesn't.
Actually it is not needed.
The reason being that the book printed latest is considered the "most up to date" version of a rule.
The feat as printed in CA does not allow "sonic" and has not been erratad, therefore it is "the" official version.
Just because the SRD has not been updated does not negate this rule of source material.
There are all kinds of "stealth errata" contained in the collector's edition of the PHB that is not in the earlier printings, errata or SRD.