[Q] No sound earphone/earplugs/speakerphone

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I have a problem with the sound on my Xperia S. It seems that I don't have sound through the ear speaker during calls. When I plug my genuine Sony Xperia S headset I do have sound. When I turn the speakerphone on during calls I do have sound. But when I use my mediaplayer w/o the headset I don't have sound over the speakerphone. Ringtones do not sound when receiving a call or text/IM-messages.

Some issues that might relate to this problem:

- I used my beats by dre Tour headphones, and since I installed KA09 Rom it doesn't give the system notification that the microphone and volume buttons don't work.
- I installed KA09 and today KA10, the problem still continues to exsist.

I never dropped the phone or had any damage, I only have it for 3 months now.

Anybody else facing problems like mine? If so, what was your solution?