Sony Ericsson has been teasing us with its hottest for some months now, the Satio (nee Idou) and the Aino, two media-heavy smartphones that are inching closer to international release. They still aren't confirmed for American shores, but until then we can enjoy a series of lengthy videos covering the two courtesy of Youserbase. How lengthy? We're talking almost 75 minutes of discussion and tentative fingering over nine parts, showing off nearly every nook and cranny of the phones' (decidedly dark) user interfaces. While there aren't any huge surprises here, the vids give good feel for the responsive performance of the UI -- and of the occasionally not-so-responsive integrated browsers. We've included just the first two installments here after the break, but if you don't have anything planned this morning feel free to click on through for the epic and sweeping series.