One difference is that the amount of vitamin B12 in Centrum Silver (25 mcg) is much lower than the amount used in the positive studies (100 and 500 mcg, respectively). Loss of cognitive function is a well-known effect of vitamin B12 deficiency.
Click on the download link. Allow the song to download to your cell phone. Close your web browser and locate the song on your cell phone (usually under sounds, music, mp3s, or multimedia). Select the song to play it.
The easiest way is to export music to the computer using iTunes. Go to My Music and copy everything to PC. Then use a free app to transfer music to your Android wirelessly. I've used this way to transfer hundreds of songs. Very fast.