Try my Tagging Inconsistencies Script (link in signature) it will find that plus tons of other errors as well.

I've had a look around the forum and can't seem to see the answer to this anywhere. Is there a script/function/node to show missing track numbers within an album. I have a few albums with odd tracks missing and it is a pain to manually check each album for a missing track number. I was thinking that there may be something that can check the track numbers within an album run sequentially and highlight albums that don't.

Any pointers would be appreciated