Most likely no errors will occur in the Service Desk logs but upon further investigation via a Fiddler trace the most likely cause is a "beep.wav" file which is being called by Service Desk.
One of the main reasons this file is called is from a Timer Setup configuration within Service Desk. Timer Setup can be accessed via the Administration tab-> Service Desk-> Application Data-> Codes-> Timer Setup.
Timer codes control the reminders to analysts that they have been working on a request longer than the recommended amount of time. This way of reminding analysts has the recommended amount of time defined as a threshold.
If any item in the Timer Setup list has Beep set to Yes, then Service Desk will attempt to play the beep.wav file. If this is not a requirement, set this option to No and the error should no longer occur.
If it is required then troubleshooting will need to be ran from the Windows Media Player, such as: updating and/or reinstalling the Sound Card and Video Card drivers, install an updated codec, etc.