"This is a version of the Key Manager script originally by Randy Kreitzman. I modified it to work with TCB controllers instead of just Beziers. It allows you to change the tangent type - ease in/out and TCB settings for a bunch of selected Track View keys all at once (even on multiple controllers). You can also shift what is selected - and affect prev/next keys as well.
Version 4.4 fixes bugs where Custom Attributes might not have been affected if they weren't named properly - or were multiple definitions. Now all CA's should be handled correctly. "