save the mouse and keyboard and get a pair of soundmagic pl30
im using it on 10km runs every other day, pretty tough pair, very comfy, wear it over the ears with the ear guides and it doesn't fall out or lose its seal at all.
althought i have to admit i don't know about its sensitivity, my hearing is fine. but if you're willing to take the risk for a good pair of jogging earphones, its dirt cheap anyway. Get it on ebay or something, even new its pretty cheap