I watch in awe with you guys going crazy, usb, sd card etc etc file copying. Here is an easy way as it only requires internet to work.Send the APK to your gmail account as email attachment (i like to use the subject "android apps" plus whatever and use a rule to auto label it, make them easy to find again)On android device, open browser, goto gmail.comopen emailclick attachment (it will download)Click new download to installRinse and repeat