Backlight doesnt turn off - Omnia i900

[Guest west.side9251]

Hi. I have strange problem with my i900 Omnia.
The backlight is always active when i turn on the music player. When i lock the device the backlight countinues to work, and it can be fixed only with restart. After restart if i open the music player (both touch player or windows media) the backlight problem occurs again.
How make that backlight inactive when standby?

Im using stock WM6.1 as i like it verry much it works for me but...this bug is annoying

Edited September 12, 2014 by west.side9251