When comparing DeaDBeeF vs MPlayer, the Slant community recommends DeaDBeeF for most people. In the question“What are the best audio players for UNIX-like systems?” DeaDBeeF is ranked 2nd while MPlayer is ranked 43rd. The most important reason people chose DeaDBeeF is:
DeadBeef has a lot of different plugins users can use to customize the interface, controls, and options.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro A lot of plugins
DeadBeef has a lot of different plugins users can use to customize the interface, controls, and options.

Pro Lightweight
DeadBeef uses few system resources, making it great for low end systems and for those requiring a media player that uses as few resources as possible.
Pro Extremely customizable
DeaDBeef has support for title formatting scripting, like foobar2000, which allows you to customize group patterns, the converter output, the window titles, etc. to your needs. DeaDBeeF also has a Design Mode, which allows you to add new widgets to the interface and move/delete existing ones.
Pro Uses GTK2 or GTK3
Users are able to choose a GTK2 or GTK3 build of the application to use within DeaDBeeF.
Pro ALSA plugin allows bit-perfect pipeline to DAC
Pro Supports single-album CUE files
Pro Smooth and easy
Pro Offers a ReplayGain scanner out-of-the-box
Pro Needs no additional codecs
Everything MPlayer needs to play media files is contained within which means no outside codecs are needed.
Pro Easy shortcut keys
Quick skip ahead buttons and other shortcut keys.
Pro No bugs , no lag in the video display
Pro Works via CLI and has multiple frontends to choose from
Some of the more popular frontends include Deepin Media Player, GNOME MPlayer, KPlayer, KMPlayer, Rosa Media Player, SMPlayer and Xt7-Player.
Pro Nice theme available to choose from
Also, the video window is separate from the main window making it less cluttered while playing audio
Cons
Con shuffle mode doesn't play an entire huge playlist (over 25 days)
Con GTK-App
So there is basically no integration into non-GTK desktops.
Con Terrible GUI
stop reinventing (ugly) guis. play music and get out of my way.
Con Fails when opening a CUE file
Doesn't work even after 30 minutes of tweaking. Not as good as Audacious.
Con Ubuntu's sound menu buttons don't work
DeaDBeeF shows up in the sound menu; however, clicking the next/previous buttons doesn't do anything.
Con Not as many options as other players
When it comes to options DeaDBeef may not have as many as other more prominent music playing applications.
Con Clunky
I've seen people showing lyrics - but I can't figure out how to make that work.
It's very difficult to use the 'design' function (unlike Guayadeque) to re-arrange and design the interface beyond something like a music list and artwork...
Con Not much documentation on the use and configuration
Con Contrary to review, some media that play well in vlc does not play in mplayer
Con Doesn't support directory playback
Con Lacks a built-in visualizer
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