Bought a selection of songs off iTunes, they are "greyed out" won't play, can't sync them

Hey so I bought a heap of songs off iTunes tonight. First 20 I bought off my phone through iTunes, no worries with them. I then got another 8 but these I bought through iTunes on my pc. These 8 won't do anything. They are grey with circles to the left of the check mark. Tried transferring all purchases, downloading all available downloads, Iv checked my account settings there is nothing that says these items are hidden, logged on and off again to iCloud still nothing. Am in-visioning a laptop sized hole in my window :/ any help? :)