When comparing aqualung vs Audacious, the Slant community recommends Audacious for most people. In the question“What are the best audio players for UNIX-like systems?” Audacious is ranked 1st while aqualung is ranked 35th. The most important reason people chose Audacious is:
Audacious is a classic music player at heart that has not felt the need to weigh itself down with an assortment of unnecessary options. Advanced functionality can be attained through plugins available from within the program.
Specs
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Pros
Pro Gapless playback
Aqualung offers continuous, gap-free playback of consecutive tracks. Your ears get exactly what's in the files – no silence inserted in-between.
Pro LADSPA plugin support
You can use any suitable LADSPA plugin to enhance the music you are listening to. There are many different plugins out there, including equalizers, spatial enhancers, tube pre-amp simulators, etc.
Pro JACK Audio Server support
Pro Multiple skin support
There's support for multiple skins in aqualung; changing them is possible at any time.
Pro Streamlined player not weighed down by unnecessary options
Audacious is a classic music player at heart that has not felt the need to weigh itself down with an assortment of unnecessary options. Advanced functionality can be attained through plugins available from within the program.
Pro Tons of plugins
Pro Lightweight
My audacious uses only 18.5 MB of RAM. It has a Winamp visualization style that's very minimized and convenient.
Pro Support for Winamp themes
Audacious can switch from its GTK interface to one that matches the looks of the famous Winamp player. What's even better is that this interface supports any Winamp themes, which allows for more options.
Pro Folder oriented player, but able to play any music container and highly configurable
Lets you play, delete and even change metadata of your music files.
Pro The easiest player for multiple types of files
It plays dts, aac multichannel, etc.
Pro Compatibility with most media formats
It's able to reproduce most of media formats without external plugins.
Cons
Con No manual sorting fields
There is no option to add one's own categories to the sorting fields.
Con Updates are not very frequent
Con No bit perfect output past 24bit
Audiophiles require this, and while most users might not notice a difference, audiophiles will appreciate the improved audio quality.
Con Buggy
For example when using Visual Studio Code and Audacious you get flicked out to the gnome login screen.