1by1 is one of the most lightweight applications that a user can make use of if he wants to play an MP3 music file. The interface is as simple as possible so that only a few elements are displayed. The playlist is shown on the screen and there are several columns that can be toggled on or off in order to show the needed info.
Along with the playlist, there are also the control buttons, through which a user can play, rewind or skip a music file, among others. A playlist can be saved and users have the option to quickly load it at a later time, starting from they left the last time. OGG and WAV files, along with Audio CDs, are also compatible with this small audio player. Music files are scanned beforehand so that no dead times appear at the beginning or at the end, so that a gapless sound scheme is achieved.