Click on the red Get The Tracks button. Then clicking on the Download On iTunes button on the next page should start iTunes and start your download automatically. If iTunes doesn't start automatically, copy the download code manually, start iTunes manually, go to the Redeem option in Quick Links and enter the code copied previously. Codes are one time use only; everyone needs a new code.
Sonny & The Sunsets
How To Dress Well
Thee Oh Sees
Cult Of Youth
The last two weren't listed, but were included in my download.
You can also still get the July/August songs through 08/31.