I downloaded lung sound mp3s from easyauscultation.com . I used an audio editing program “Audacity” to take two mp3 files and merge into one mp3 file with one lung sound on the left track and the other on the right track. Uploaded this new mp3 to my android phone which I hooked up to an old pair of headphone speakers. These speakers were put into the training dummy. Set my phone to repeat the mp3 continuously and now I am able to auscultate left lungs sounds and right sounds on our department’s training dummy with a stethoscope. I put normal breath sounds on right lobe and wheezing on the left lobes but you can combine them however you like.