I've just buyed this headphones: http://www.amazon.com/Sennheiser-HD-429-Headphones-Smartphones/dp/B009HQTORS
They have a mic button so you can talk when attached to a mobile.
If I use the headphones in a mobile (I've just tested Samsung S3 and S1) it works like a charm.
But if I use them in my Sony Laptop with Ubuntu, sound quality is really bad. If the player is flash, sound is not good. If it is not, sound is just horrible. But if I press mic button, sound is perfect!!
What can I do?