How to phase lock samples?

Hi :)

I believe "phase locking" is the proper term; please correct me if I am wrong.

When the pitch has to be the same between multiple definite-pitch samples, so there are no pitch-related anomalies when you morph between them.

I am pretty sure this would require a 3rd-party app; looking for some advice on where/how to get this done.

At the end of last year, I purchased a sample lib, where one of the main features is morphing between sample A and sample B using the MWheel. There are tuning issues, and the dev has stated via email that this will not be fixed until later next year. I should ask for a refund, but I really want this lib if it works properly.

Thoughts?

Thanks in advance.