After you make DTX data partly, you should check it by playing on DTXViewer.

Play from the beginning

Click [Play(P)] - [Play from top] in the menu bar or click button in the toolbar. It starts DTXViewer and start playing the editing score from the beginning.

Playback from the current position

Click [Play(P)] - [Play from current part] in the menu bar or click button in the toolbar. It starts DTXViewer and start playing from the bar which is shown in the DTXCreator.

Changing playabck speed

You can change the playback speed from toolbar.

Playback only BGM from the current position

Click [Play(P)] - [Play BGM from current part] in the menubar or click button in the toolbar. It starts DTXViewer and start playing BGM from the bar which is shown in the DTXCreator.
The BGM means which is checked "Use this sound as BGM" in the Sound property.

Stop playing

Click [Play(P)] - [Stop] in the menubar or click button in the toolbar. It stops playing in DTXViewer.

Remarks