It’s been a long time coming, but the much-anticipated Slacker Portable is ready to shake up the digital music world. Available in 15-, 25-, and 40-station capacities (Slacker measures the storage by the number of stations, as each station contains dozens upon dozens of songs), the Slacker Portable allows users to sync their favorite tracks from Slacker’s online Internet radio service via USB 2.0 or over the air via Wi-Fi, and to toss in a mix of their own MP3, WMA, and AAC files.

The built-in touch strip and scroll wheel make it simple to navigate the beautiful (and massive) 4-inch display, which allows music fans to view album art, reviews, and artist bios. All in all, the Slacker Portable faithfully recreates the look and feel of the web-based application, and looks to be the most intriguing player of 2008.