When comparing Gnome Music vs XMMS, the Slant community recommends Gnome Music for most people. In the question“What are the best music players for Linux?” Gnome Music is ranked 28th while XMMS is ranked 29th.
Ranked in these QuestionsQuestion Ranking
Pro Open source
Pro UI design consistent with GNOME desktop environment
Gnome Music is GNOME's default music player. If you use GNOME Desktop Environment, you'll feel familiar with other GNOME Apps like this one.
Pro Simple clean and minimal interface
Pro System-wide music organizer
Gnome Music automatically seeks and organises your music files throughout your system using Tracker.
Pro Support for Winamp themes
XMMS is able to use any Winamp skin available.
Pro Simple and familiar music player
Many users should be pretty familiar with the interface as it has been built to match that of the popular Winamp player.
Gnome Music needs a tracker daemon running in the background and that thing never loads the music. It takes forever for a huge library to be loaded even if it was previously partially loaded.
Con Cannot change library folder
Con Looks are dated and may be unappealing
XMMS is pretty long in the tooth now and it's design definitely reflects that.