I own AK JR Black, and you know what s going, this type of scrolling doesn't work on this machine. Its NOT LAGGY, if you trying fast scrolling, system is not able recognize it, so AK JR think you are actually click, of course you can scroll down in your library but not so fast as on mobile phones. Its good machine, its not so fast, but its still ONE of the solids build I ever seen, especially deep black anodization looks perfect. There is one more tip, don't put inside this player high resolution album artwork, this is the main reason why he is so slow... seriously. My Santana album artwork got 1200 dpi, when I open it its nightmare. Sounds good, build quality is perfect, yeah its little bit slow, depending on your album artwork resolution - yes its weird.