I often enjoy (when it's not dead of winter) a fruit smoothie for breakfast; generally I use orange juice or some other juice flavor (V8 has a few with fruit flavors masking veggie tastes that I sometimes use), yogurt, and fruit I've frozen myself (removes the need for ice, leading to a thicker smoothie). Typically I use strawberries and bananas; however, when I purchase smoothies, my favorite flavors involve raspberry. I've tried purchasing frozen berries and tossing some in, but the seeds irritate me to no end.
How can I get the taste of raspberries, preferably from raspberries themselves rather than extract (seems healthier), but not the seeds?