Missing purchased music
I have many Apple devices and it seems my iphone 4 can download missing songs but I can't seem to figure out why my itunes media has missing songs to begin with and how to restore or redownloadb them. I have tried connecting my iphone to my computer using itunes and right clicking to "transfer purchases" and it doesn't seem to work. I can see my past purchases in 'My Account" and there isn't any way to download it again. I don't have Apple TV, and I have even tried the highlighting itunes store then on the right side clicking on "purchased" then highlighting music and it just doesn't have any of the purchases i have made and they were all made on this (MACbook Pro 17") computer I'm using with itunes. My ipad is an older 160 gig unit and it also doesn't like it when I connect it to my computer anymore. I have current software. HELP Please