using CSV, DataFrames, Dates, DSP, Glob, JSON, PerceptualColourMaps, Random, TimeZones, WAV, PNGFiles, Images

using CSV,
    DataFrames,
    Dates,
    DSP,
    Glob,
    JSON,
    PerceptualColourMaps,
    Random,
    TimeZones,
    WAV,
    PNGFiles,
    Images

df=

            mv(chop(src, tail = 3) * "wav", chop(dst, tail = 3) * "wav")

            isfile(chop(src, tail = 3) * "wav") &&
                mv(chop(src, tail = 3) * "wav", chop(dst, tail = 3) * "wav")