The songs were very bland in Fallout New Veas and definately lacked the appeal that came with Fallout 3. Granted, hearing the voice of 3 dog yelling "OWWWWWWW" got quite frustrating after a time, but it was nice to hear the jubilant songs of the 20's. With Fallout New Vegas I could hardly distinguish the songs, and it felt like they were a bit washed out.
By the way, is it possible to play additional songs if you are playing on a PS3?