This is 100% pure GDScript embeddable Software Mod Player.

1.7.1 updates:
* Fixed portamento up/down
* Fixed error when read empty pattern from XM files
* Remove unused codes

1.7 updates:
* Fixed tone portamento in linear frequency
* Fixed vibrato does not working
* Fixed volume slide command
* Fixed Instrument panning
* Fixed portamento/vibrato in linear frequency
* Fixed tone portamento bug
* Fixed 16-bit sample loop point bug.
* Fixed 3xx/4xx "continue" parameter
* Fixed volume resets when has no instrument number
* Implement frequency 0 to stream stop.

1.6 updates:
* Fixed pitchbend in linear frequency mode.
* Implemented vibrato depth of volume command.
* Implemented global volume slide continue (parameter 0x0000).
* Implemented temporary multi retrig note.

1.5 updates:
* Refactoring code
* Fixed silence seconds
* Added code for reuse AudioBus(es)

1.4.3 updates:
* Fixed double displaying in Node list.

1.4.2 updates:
* Fixed note cut parameter bug
* Refactoring source code.
* Some changes mod/xm file reader APIs

1.4.1 updates:
* Fixed doesn't re-note on when sets instrument.
* Fixed some tempo bugs.

1.4.0 updates:
* Implemented using threads.

1.3.2 updates:
* Implemented global volume command.

1.3.1 updates:
* Fixed can't read flexible pattern order table for XM files.
* Fixed mod-sample finetune on minus.
* Fixed misalignment timing and found noises when use 16bit samples
* Fixed behavior when not set instrument ID.

1.3.0 updates:
* Fixed problem play mod files
* Fixed tempo bugs
* Implemented some commands: patttern delay, note delay and pattern loop

1.2.0 updates:
* Implemented xm loader and player.

Supported files:
* xm
* mod

Demo app:
https://bitbucket.org/arlez80/godot-mod-player/downloads/demo.zip