The default beep tone of QQ everyone already tired of listening to it. We can borrow QQ dazzle Bell for QQ hint tone "change sound", but the prerequisite condition you must have the dazzling Bell service QQ user.
Tips: Dazzle Bell is a function of QQ to provide services, when you set the Dazzle Bell, and then send another QQ message, the recipient will hear you set the Bell song, which can play a role in regulating the tension between the two sides.
First login to their QQ number, in its panel click "menu" → "settings" → "System settings" option, this will pop up "QQ Settings" dialog box. Here, select the "Sound Settings" option below and tick the "Open Sound" checkbox (Figure 1).
Then click the "Browse" button to find the local ringtone file, whose default address is in the "C:Program filestencentqqqring files" file, you can choose any one of the ringtones. After the operation, click the "Play" button, try to listen to its music is satisfied, if not satisfied again into the Dazzle Bell file, select another piece of music until you are satisfied, you can click the "OK" button to replace the beep tone music.