Quark is a daemon-like player that uses Xine-lib to play music. It features a front-end that sits in your system tray. It uses Xine-lib for playing music, and can therefore play any file format supported by Xine.
Quark comes with a couple front-ends to make it more usefuland atractive.
charm-quark - a CLI interface
strange-quark - a GTK System Tray interface
If you want to play files that are not named in UTF-8 encoding and contain non-ascii characters, then you will have to pull some strings to make Quark load them.
Seting environment variables as shown here can make Quark work with them:
export G_BROKEN_FILENAMES=0 # this says that your filenames are not UTF-8
export CHARSET=ISO_8859-1 # this tells Quark what charset your files are using, change its value as appropriate
Alternately, you can rename your files to use UTF-8 characters.