Mexx535d

hy everyone.
i have an issue with cd player in my e60.
sometimes i hear srange noises coming from it like scratching.
also player sometimes wont recognize cd.
i tried with hama cleaning cd but nope.
what are my options.
i bought mp3 player and conected it via aux in but i cant see folders and name of tracks.also steering wheels buttons doesnt work with that player.
i have cd changer but i dont like to burn cds all the time
i want sometinhg with sd or usb card.
my friend tried with yatour mp3 digital changer but it makes noises in playback...