I found the anthem to be a bit meandering and forgettable really. But it's certainly something I can see being included. Also countless musical performances at Quarks bar over the run of the series, klingon opera? (I hope not!), Dax's tune from Equilibrium, the do-ra-me bit from Chrysalis. There's quite a list. I hope this stuff doesn't take away from more memorable cues such as happened on the TNG disc with source music from Inner Light and The Survivors.
I'd also prefer they skip the source music (except maybe the Chrysalis piece) and stick to score. It really disrupts the listening experience.