Rovio has licensed its incredibly popular Angry Birds designs to several companies. We’ve already seen Angry Birds plush toys for sale; now speaker and iPod accessory maker gear4 has hopped aboard and is producing Angry Birds iPod speakers and iPad 2 cases.

The Angry Birds speakers are compatible with Apple iPhone 3, 3GS and 4 and will also work with the latest iPod touch. Set for launch in the UK in September, the Angry Birds branded speakers cost £49 for the most distinctive Red Bird version while the Helmet Bird and Black Bird will squawk out tracks from your iTunes library in return for a £49.99 outlay. The Black Bird speaker is the one model in the range that will recharge an iPhone or iPod as well as playing whatever’s stored on it.

Gear4 includes a 3.5mm audio jack so the Angry Birds speakers will work with MP3 players of any brand.