Thank you so much Adrian and Fernandez, I have like 600+ songs from my personal CD collection and some that have been downloaded via other sources (ares and so on),...
But I want paid high-quality music and so I plan to replace like 60+ songs from a good online music library such as iTunes, but this DRM signature makes me think twice whether it will play on any device I want to (such as Android devices for example), after all the music is mine, I buy it and should have the right to play it on any device I want. But now I will also check out Amazon music store to see what type of music it is and if it is DRM. Also I prefer 192Kbps instead of 128Kbps, I dont know what the AAC stands for, but will check.
Thank you so much guys.
Look what I just found out at Amazon music store
"Songs from Amazon MP3 can be played on any MP3-capable device, including iPods, Zunes, Zens, iPhones, RAZRs, BlackBerrys, and most media-enabled mobile phones. Our files are free of digital rights management (DRM) software, so you can burn your songs to CDs, play them on all your computers, and transfer them to all your devices. Songs are encoded at 256 kbps (learn more about MP3 bitrates), which means you get high audio quality at a manageable file size."
Source:
http://www.amazon.com/gp/dmusic/help/faq.html