1by1 portable

1by1 is a small, fast and handy audio player which is not only small: it provides a smart and versatile environment to handle your file collection and listen to your tracks - with no need for playlists or databases.

Directory Player: directly plays your folder contents
Full Resume play: remembers last track and position
Gapless play · Transition overlapping · Audio enhancer
Folder tree file navigation · Directory finder (play a whole drive)
MP3 decoding by ACM or mpglib
BASS library support (OGG, WAV, FLAC, AAC, MP4, CD...)
File utils: copy, move, rename while play, delete, date change
Big title display · Rename tool · Folder compare tool
Cue sheet support · Playlist support · Favorites
Winamp 2.x input plugin support · WAV export
Track logging · HTTP web and streaming server
Highly configurable · Theme presets · Global hotkeys
Very small size · Low resource usage · Portable

http://mpesch3.de1.cc/1by1.html