Are you sure this is a Mp3 players? This look more like a part of KDE And this will not install without some others "part" you have to compile before this one.
If you are a newbie, you really DON'T want to compile Kde from source.... it's very hard, dangerous for your actual kde, unpredictable...
Get XMMS, it's a very good mp3 players, close to Winamp. If you installed Gnome, you probably already have it.