split stereo to interleaved convertor?

[recall]

I mix back to Pro Tools in split stereo. When the client wants to take a cd home at the end of a long session is there a more elegant way of doing this multiple times than using pro tools' "export files as..." dialog, snapper does this but ideally I'd like something that I can select a batch of files and have them converted to interleaved 24 bit files and dithered down to 16 bit interleaved for the client's CD.

I have peak but have never really got on with the design, is there a simple application for Mac OS X which can help out?

I know I have the tools with PT to do this using the "export" dialog, I just find it a bit clunky especially when I go back to older mix sessions.

Cheers,

Iwan