Fix FSX custom menu music not playing with the right UIMusic folder, PCM WAV format, file naming, sound settings and a full restart.
Custom menu music usually fails in FSX or FSX: Steam Edition because the file is in the wrong UIMusic folder, is not a genuine uncompressed PCM WAV, or was added while the simulator was running. Confirm music is enabled, use the active installation’s UIMusic folder, convert the audio properly, then restart FSX.
Where does custom menu music go in FSX?
Custom menu tracks belong in the UIMusic folder inside the active FSX installation, not the general Sound folder or your Flight Simulator X Files folder.
- Boxed FSX: commonly
C:\Program Files (x86)\Microsoft Games\Microsoft Flight Simulator X\UIMusic - FSX: Steam Edition: commonly
C:\Program Files (x86)\Steam\steamapps\common\FSX\UIMusic
Those are only default locations. If FSX or Steam is installed on another drive, find the folder containing fsx.exe and use its UIMusic subfolder. A mistake we see constantly is editing the boxed installation while actually launching Steam Edition, or vice versa.
Which audio format does FSX menu music use?
FSX menu music should be exported as a genuine uncompressed PCM WAV; changing an MP3 file’s extension to .wav does not convert it. A conservative compatibility choice is 16-bit PCM, stereo, at a conventional sample rate such as 44.1 kHz.
A WAV file is only a container and can hold audio encoded in several ways. Modern editors may export 24-bit, 32-bit float or compressed audio inside that container, all of which are less dependable with an older simulator. Windows being able to play the file does not prove that FSX can decode it.
A reliable replacement procedure
The safest test is to replace one known-working stock music slot rather than relying on FSX to recognise an entirely new filename.
- Close FSX completely. The simulator loads its interface music when starting, so copying a file while it is open may have no effect.
- Open the active
UIMusicfolder. Confirm that it belongs to the same installation from whichfsx.exeis launched. - Back up the original WAV files. Store the backup outside
UIMusicso it cannot be selected as another track. - Export the custom audio properly. Create a fresh 16-bit PCM WAV instead of merely renaming the source file.
- Reuse an original filename for testing. Replace one stock track with the custom WAV under exactly the same name. Enable filename extensions in Windows Explorer and make sure the result is not accidentally named
filename.wav.wav. - Verify the copy and restart FSX. Windows may request administrator approval when writing under
Program Files. Once FSX opens, enable sound and raise its Music level.
For a control file, compare your setup with a known-compatible FSX menu-music package and its placement guidance. A second collection of compatible FSX interface tracks can help establish whether the problem is your own WAV export.
Why do stock tracks work but my custom song does not?
If the original tracks play, FSX’s audio system is working and the fault is almost certainly the custom file, its filename or track selection.
| Symptom | Likely cause | Action |
|---|---|---|
| Stock music plays; custom track is silent | Unsupported WAV encoding | Export it again as uncompressed 16-bit PCM |
| A renamed MP3 does not play | The audio was never converted | Use an audio editor’s export function |
| The file appears correct but is ignored | New filename is not being selected | Use the exact filename of a backed-up stock track |
| The custom track plays only occasionally | FSX is selecting another available menu track | Temporarily move the other tracks outside UIMusic for testing |
| The copy is denied or does not remain in place | Program Files permissions | Approve the administrator prompt and verify the destination afterwards |
What if FSX has no menu music at all?
If even the original menu tracks are silent, check FSX’s Music setting and the Windows playback path before converting any more files.
- Restore the backed-up stock
UIMusicfiles and restart FSX. - Raise the Music level in FSX’s sound settings and confirm that simulator sound is enabled.
- While FSX is running, inspect the Windows volume mixer and make sure the application is not muted.
- Set the intended speakers or headset as the Windows playback device before launching FSX, then restart the simulator.
- Check whether engines, ATC and other simulator audio can be heard. If all audio is missing, use our broader FSX sound and playback-device checks.
Menu music is only intended for FSX’s front-end screens; it normally stops when a flight loads. Files in UIMusic cannot be used as continuous in-flight or aircraft sound simply by changing their names.