Structure Free sample multiple note playback /different durations

[jgsmith]

I apologize in advance if this is an already-addressed issue.

I have a vocal wav of about 4 seconds set up as a patch.
I'd like to play multiple notes (e.g., an A minor chord), and yeah it works, but of course each note has a different duration.
The lower the note, the longer it takes to complete the wav playback (so, in root position, the E completes first, then the C, then the A).
It makes sense, but sounds terrible ( a little like the first 'oh no!' part in a horror movie soundtrack).

Is there any way to synchronize the sample so that, regardless of pich, the playback duration is equal across all notes ?
Is this something the for-fee Structure can do ?
Or is SF the wrong tool ?

Let me know if this needs more explanation.
I've been researching the Structure Free reference and tutorial information with no luck so far.

Thanks very much for any advice, links, ideas to try, etc.