When comparing Audacious vs gmusicbrowser, 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 gmusicbrowser is ranked 19th. 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 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.
Pro Great with large libraries
This program uses a tagging system to help you find the music you're looking for, and can even help find duplicates. It will also automatically sync with a folder, meaning you don't have to manually initiate a scan.
Pro Cool AutoTagger
The smartest auto tagger out there. It has an intelligent regular expression system to tag the files based on the filename contents. If the name contains something like Band -Album - Track -Title www.download.mp3, the system lets you filter the metadata fields.
Pro Large assortment of layouts
You can pretty much emulate your favorite media player layout inside of gmusicbrowser as it has a large assortment of pre-made layouts as well as an insurmountable amount of options for custom layouts.
Pro Remembers playing/pause status even after restart
With most other options, you have to start the player, wait a few seconds, then click Play. Gmusicbrowser spares you the wait and plays music automatically upon startup (if you were playing music when you closed it previously).
Pro Intelligent auto playlists
Automatically generated playlists with the criteria you decide. Great for big collections.
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.
Con It won't install on Linux Mint 21
Con Held back by performance issues
Can be very slow, uses a lot of resources, and has a decent amount of lag when going between songs.
Con Doesn't support media keys
Con Unusual keyboard shortcuts
Space does not pause, for instance. This would have been useful, as hitting the space bar is easier than finding the play/pause button - most music players use the space bar in this fashion.
Con Some plugins are outdated
Several plugins works on older versions of libraries no longer available for recent distros.

Con Poor library management
Initial load may have issue skipping parts of ones library, re-scanning may not resolved the issue. It also may tax ones CPU quite a lot, during these load attempts.
Con No WMA support
For those with older libraries that may still have unconverted WMA files, this can be a non-starter.
Con Large assortment of features and layouts may be confusing
Some people may find all of gmusicbrowsers layout and options daunting to figure out.
