There's a id3tag in mp3 known as "disc number" very useful when there're two or more discs in a Album. 

Most players I've try, manage this tag to arrange songs in the same album first by disc number, then track number.  Banshee (i'm using 0.11.6) arrange songs just by track number, then you get a playlist like this:

1. 
1. 
2.
2. 
...


You can resolve this changing the album name, but it's not as transparent and elegant as managing the tag :)