Here’s the deal:
Starting with our first release in 2007 (the new Shins record) and continuing on until such time as we lose interest or forget, if/when you buy a Sub Pop release in the vinyl format, you will find a coupon enclosed. And on this coupon will be instructions, a url and a unique code for you to download the mp3s for the album you’ve purchased.
Please note that these coupons, and their associated access to free mp3s, will not magically (or otherwise) appear in albums released before January of 2007.
There is some more info on all this business here.