How to convert audio-files from smrc-format to playable format?

I have to process interviews, recorded on iphone and sent to me in smrc-format. I have been unable to find a file-converter able to read smrc and convert to mp3 or comparable.

Is there a way to make these files audible?

The header of one of these files starts like this:

bplist00‘ûüX$versionX$objectsY$archiverT$top�܆Ø($%&-89:;<=>IMPSVY_bepsvy|äçêìñóòôùU$null“ V$classZNS.objectsÄ´

Help would be greatly appreciated, the interviews cannot be done again.

How to convert audio-files from smrc-format to playable format?
 
 
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