I have a midi file of what I think is the boss theme. I don't remember what the underground sounded like but will probably remeber once I hear it again. I'll see what I can find, but it can be hard to find. People love to make different versions of the themes without tagging it, so you think your getting the theme and it's really some techno or remix they made. Can be annoying.


#EDIT#

I found what you're looking for
 SMB_Underworld.mp3 ( 1.12MB ) Number of downloads: 384

 SMB_Underworld_small.mp3 ( 285.9K ) Number of downloads: 260


first is original file, second is dropped quality to be under the 300K limit of some phones.

What I had to do is "Save As" as a php and then go and change the extention. I need to figure out how to just remove the quicktime player so it just promps to save.

Here's one I have. I try to use Video Game sounds. you can tell who the geeks are when they hear these.

Alert:
 Chocobo_Wark.wav ( 14.54K ) Number of downloads: 411


FF7 Ringtones (edited to be under the 300K limit)
 Ringtone_FF7_Battle_Theme.mp3 ( 226.8K ) Number of downloads: 281

 Ringtone_FF7_boss_battle.mp3 ( 60.62K ) Number of downloads: 154

 Ringtone_FF7_Chocobo_music.mp3 ( 137.23K ) Number of downloads: 127

 Ringtone_FF7_One_Winged_Angel.mp3 ( 120.36K ) Number of downloads: 105

 Ringtone_FF7_Turk_s_Theme.mp3 ( 181.73K ) Number of downloads: 94

 Ringtonw_FF7_Victory.mp3 ( 134.91K ) Number of downloads: 193


Super Mario theme
 Ringtone_Super_Mario_Bross.mp3 ( 177.31K ) Number of downloads: 488