| .xm |
Fasttracker 2 Extended Module |
| .xfs |
eRacer Sound File |
| .xspf |
XSPF Playlist File |
| .xt |
Xdebug Trace File |
| .xrns |
Renoise Song File |
| .xa |
PS1 Audio File |
| .xmi |
XML Metadata Interchange File |
| .xmf |
Cal3D XML Mesh File |
| .xmu |
Expressive Music Container File |
| .xms |
Music Studio Project |
| .xsb |
XACT Sound Bank |
| .xwb |
XACT Wave Bank |
| .xmz |
FastTracker 2 Extended Module |
| .xsp |
Kodi Smart Playlist File |
| .xpf |
LMMS Preset File |
| .xbmml |
Braille Music Markup Language File |
| .xi |
Fasttracker 2 Extended Instrument File |
| .xp |
Fastracker 2 Pattern |
| .yookoo |
Yookoo Player Playlist File |
| .ym |
Atari ST Audio File |
| .zvd |
ZyXEL Voice File |
| .zpl |
Zoom Player Play List |
| .zpa |
Vielklang Audio Metadata File |
| .zgr |
BeatSlicer Groove File |