No sound (no radio, no ogg music, no output at all), that is? I'd like to ask you, if it's possible, to paste here the content of the download requesting pop-up window which came with your music player. Although not for sure, this could bring some nice light on the trouble trigger.
changed that MM to M IN ALSAMIXER
Could you let me know if rather "I changed the MM to an OO with the m-key(mute/unmute)" was meant?