Toshiba Satellite Pro C650 - Audio Cutting Out

I have a Toshiba Satellite Pro C650 01301J laptop running Windows 7 Professional 32Bit. I try and listen to music either through spotify or simply using my library of music in Windows Media Player, however after a while the audio cuts out. It isnt muted in mixer and the song keeps playing as if nothing has happened, except I cant hear anything. This is fixed when I mute and unmute or turn the volume up or down using the fn keys. When I first start up the music it will take 5 minutes or so before it happens, however once it starts it will cut out every 10 seconds or so.

My audio driver is Conexant CX20671 SmartAudio HD version 4.119.0.61. I have tried deleting this and reinstalling it, downloading an older driver and updating it. It tells me it is the latest driver but its still not solved the problem.

Is there another driver I could try or perhaps a program that is causing it?