Noises are contained if you touch the touch pad during an audio file playback

When an audio file (such as MIDI file, MP3 file) is being played, if you touch the touch pad, noises are contained. If you touch the touch pad all the time or use Notepad, you can hear noises intermittently.

This is a sound driver problem. As a current solution, do not to use the touch pad (moving the mouse cursor, performing key operations) very often while an audio file (the symptom is reproduced only in MIDI files) is being played.

[Remarks]
We have no plan to update a sound driver at this moment.