foobar2000 is a freeware auio player for Windows developed by Peter Pawlowski, a former freelance contractor for Nullsoft. Featuring a minimalist interface, it also has many features for metadata support and high-quality audio output. The theoretical maximum sampling rate is 1 MHz and bit depth can be as high as 32 bits per sample. To maximize the audio fidelity of consumer-grade equipment, it provides noise shaping and dithering. It features a number of official and third-party components which add many additional features. While the core is closed source, the author provides an extensive SDK under the BSD license. Since version 0.9.5, foobar2000 supports Windows XP and later releases only. This version features a revamped default interface, with embedded support for album list, album art, spectrum visualization, and some other features and improvements.