From my offline experience, I've realized that there is a large group of people who stick with old-fashioned CD players and refuse to use their computers for music playback.
While there is plenty of "easy" software aimed at casual users, such software generally suffers from other issues derailing the experience: gaps between tracks, poor user interface responsiveness on older machines, crashes.
Boom is an easy to use audio player intended for casual computer users who do not wish to spend their time on figuring more sophisticated software out. All of its most important features are easily accessible out-of-the-box.
No installation or administrator rights required! Just download and run.
Gapless playback of properly encoded files. Enjoy smooth transitions between tracks.
ReplayGain support. External software is currently required to write ReplayGain information to file tags to utilize this functionality.
Contents of your music folders are shown, in a convenient structured genre/artist/album/song view. By default, contents of "my music" folder or Windows Music library folders are shown. You can configure Boom to index music from any other folders though.
You can install Boom to removable media and have it index contents of the folder it is installed in.
Are your files badly tagged or missing tags alltogether? No problem, Boom can browse your music library by its folder structure.
Supports variety of popular audio formats, including: MP3, Ogg Vorbis, FLAC, Musepack (MPC), WavPack, WAV, AIFF, MP4/M4A, WMA.
For emergency tagging needs, Boom includes a simplified version of the foobar2000 Properties dialog.
Easily configured to run from removable media.
Multilanguage support. Boom will pick one of the built-in localizations depending on your system language.
You can translate it to your language - see downoad links below - and submit the language file to be included with the next Boom update.
To submit your translations, join #boomaudio on irc.freenode.net.
Version 1.0.16 highlights:
AIFF tagging support.
Improved usability on Windows 8 tablet devices.
Noteworthy features currently missing:
Internet radio playback is not supported.
No easy way to integrate with Windows Explorer other than manually going through "open with" / "choose default program" for every relevant file type.
No audio CD playback.
Windows 7 or newer required for full functionality.
Windows XP or newer supported with limited features. AAC decoding requires Microsoft codecs included with Windows 7