In KAG, the audio track of the Wave system (no compression Wave and Ogg Vorbis, etc.) and the MIDI sequence data and CD-XA can be played as BGM.
　Please check Preparation for details.

　Here (for the sake of this tutorial), CD-DA is used and change doubleBuffered=false in Config.tjs to play "CDDA" type audio.

　Does cdVolume have to be specified? Shouldn't CD-XA be used? CD-XA has to specify the CD-ROM drive and so cdVolume shouldn't be set, and use CD-XA only when you know how to retrieve the music from the CD-ROM drive.

　Or this error can come up: Please insert a suitable music CD in CD-ROM drive.

　Use the tag 'playbgm' to play. In addition, use the tag 'stopbgm' to stop playback. Then...

[wait time=200]
*start|Start
[cm]
[playbgm storage="e:3"]
BGM is playing... Click to stop it![l]
[stopbgm]

　For the storage attribute in the playbgm tag, e:3 is specified.e: is a CD-ROM drive letter to play from the CD-ROM. The following '3' is the track number to play.

　The letter e: can also be written in the cdVolume of Config.tjs. KAG automatically goes to look for the CD-ROM drive label specified in cdVolume, if the drive letter(e:) isn't mentioned in the playbgm tag.

　Moreover, except for CD-DA, if you want to playback a MIDI sequence data, for instance, only the filename can be specified for the storage attribute.

　To add fade-in and fade-out effects, you can use the 'fadeinbgm' and 'fadeoutbgm' tags.
　In the 'time' attribute, you have to specify the time duration for the fade-in or the fade-out BGM effect.

[wait time=200]
*start|Start
[cm]
[fadeinbgm storage="e:3" time=5000]
BGM is playing... Click to stop it![l]
[fadeoutbgm time=5000]

　Because these tags doesn't wait for the end of the fade-in and fade-out effects, it is necessary to use the [wb] tag to wait for the end.

　There is tag named 'xchgbgm' that replaces the BGM tag. In the Wave and the MIDI system, the cross-fade is also possible (Please refer to Config.tjs).

　Please note that the plug-in should be specified when you use OggVorbis, TCWF, and Micsoroft ADPCM in the Wave system(Please refer to the Preparation section). This is for the sound effects too.