Other players have proprietary user interfaces with a touchscreen, a click wheel, or navigation buttons. Some players are based on the Android operating system and will be very familiar to Android smartphone users. User interface: Aside from physical characteristics, differences between user interfaces can be dramatic, and they can make or break your overall experience. WMAL (WMA Lossless) a lossless codec commonly used by Windows devices.WMA (Windows Media Audio) A lossy codec commonly used by Windows devices.Ogg-Vorbis A lossy codec that is popular, but less common than MP3.

MP3 (MPEG audio layer 3) A very common lossy codec.

MQA (Master Quality Authenticated) A backward-compatible lossless codec that applies a digital fingerprint to a file to guarantee it was sourced from the original master recording.

FLAC (Free Lossless Audio Codec) A common free lossless codec.

DSD (Direct Stream Digital) A high-resolution codec that originated with SACD (Super Audio CD).

AptX A near-CD-quality audio codec supported by some Bluetooth devices.

APE A free and very efficient lossless codec from Monkey’s Audio.

ALAC (Apple Lossless Audio Codec) Commonly used by iOS devices.

AAC (Advanced Audio Coding) A lossy codec commonly used by iOS devices and at the iTunes store).

Nest digital optical converter