Yeah but, the music would be an option. there would be a website that would have a list of songs and their codes, and then you click the music button and type in the code then the music turns on. Its simple. Also the website would be updated weekly and the bandwith problem is a bummer, but, if you use youtube it uses up more

Dude the best song is Imma be by the Black Eyed Peas or Skrillex - Bangarang

Would in game music be a good idea? Yeah it would. The only problems are that it could lag and controlling the music. Although, if it didn't lag and would be easy to control, tanki online would be AWESOME (well it already is, but even awesomer)