Newbie with a question on Playing Mp3's and Audio Manager

[ApexStang]

I'm new here. I've been searching, but honestly, I'm not techy enough to figure out some of this stuff much less understand the terminology used on these forums.

Here is what I would like to do and it would be great if someone could tell me if it is possible.

Can I make Audio Manager my Default player instead of Windows Media Player.

When I goto the Cube, it defaults to Windows Media Player.

If so, then how?

Next question. I noticed that when I opened up Audio Manager, it has a word in the list noted as "Protected". I was thinking I could move over my MP4 itune files over to my mini SD card and play my itune songs on this player. I'm thinking that must be a no - go.

Thanks for anyone's help.