DoubleTwist is at its core a free music jukebox that offers content syncing to a variety of portable devices, including the BlackBerry, the PSP, and the iPod, as well as pretty much anything that can mount in Universal Mass Storage mode. One of the main draws of the program is that it can take your iTunes library and sync it to a variety of non-iPod players, an important feature for anyone who has ditched the ubiquitous device in favor of a music phone or other MP3 player.
In addition to acting as a music management app that's compatible with a variety of devices, the jukebox offers built-in support for Amazon MP3 Store purchases, which is in line with the company's goal to offer consumers choice when it comes to digital music management. Plus, the service includes a podcast aggregator for easily finding and subscribing to a variety of popular spoken word content. More recently, DoubleTwist added an Android Market, which lets you browse apps and then use a barcode scanner to download them via your phone's camera. All of these features work incredibly well, though our praise for performance ends there.