GENUKI Devon has several text items about the county dialect but no audio
that I can find. But the British Library has an online audio collection of
English dialects, at
Searchable by county, 11 recordings for Devon, just over an hour in total,
mostly recollections of elderly farm workers in the 1950s and early 1960s.
Each recording has an associated "linguistic description" for those
furriners who might benefit from a little translation. Does anyone know of
Credit to Peter Calver for drawing attention to this resource