I believe I now have collected all the songs of SimCity and have successfully installed the music into my SC4D Game.  All songs are mp3 format.  Do you have all the music in your SimCity Game Radio Directory's Collection?

   C:\Program Files\Maxis\SimCity 4 Deluxe\Radio\Stations\Mayor\Music\
   ==================================================================

SimCity 4 Deluxe Original Installed Region Music (7 Songs)
   SC4g1.mp3                             3694 KB
   SC4g2.mp3                             7075 KB
   SC4g3.mp3                             5238 KB
   SC4g4.mp3                             6076 KB
   SC4g5.mp3                             4101 KB
   SC4g6.mp3                             5008 KB
   SC4g7.mp3                             5137 KB

SimCity 4 Deluxe Original Installed Mayor Music (17 Songs)
   SC4m01.mp3                            5073 KB
   SC4m02.mp3                            5673 KB
   SC4m03.mp3                            4942 KB
   SC4m04.mp3                            7327 KB
   SC4m05.mp3                            4833 KB
   SC4m06.mp3                            5277 KB
   SC4m07.mp3                            4764 KB
   SC4m08.mp3                            4672 KB
   SC4m09.mp3                            4738 KB
   SC4m10.mp3                            5173 KB
   SC4m11.mp3                            4999 KB
   SC4m12.mp3                            6042 KB
   SC4m13.mp3                            5177 KB
   SC4m14.mp3                            3323 KB
   SC4m15.mp3                            4396 KB
   SC4m16.mp3                            4949 KB
   SC4m17.mp3                            5701 KB

SimCity 4 Deluxe EP1 Update (from SimCity.com) Additional Music (11 Songs - 3 R + 8 M)
   SC4ep1_01_M.mp3                       6655 KB
   SC4ep1_02_G.mp3                       7125 KB
   SC4ep1_03_G.mp3                       5570 KB
   SC4ep1_04_M.mp3                       4488 KB
   SC4ep1_05_M.mp3                       5640 KB
   SC4ep1_06_M.mp3                       4868 KB
   SC4ep1_07_M.mp3                       4782 KB
   SC4ep1_08_G.mp3                       4839 KB
   SC4ep1_09_M.mp3                       4873 KB
   SC4ep1_10_M.mp3                       4903 KB
   SC4ep1_11_M.mp3                       5868 KB

SimCity 3000 Unlimited Official Soundtrack (20 Songs)
   01_SC3K_Power_Grid.mp3                5385 KB
   02_SC3K_Magic_City.mp3                  5738 KB
   03_SC3K_Illumination.mp3                7309 KB
   04_SC3K_Building.mp3                      5655 KB
   05_SC3K_Window_Washers_Dream.mp3      4698 KB
   06_SC3K_Infrastructure.mp3             6672 KB
   07_SC3K_New_Terrain.mp3              5349 KB
   08_SC3K_SIM_City_Theme.mp3       963 KB
   09_SC3K_SIM_Broadway.mp3           5676 KB
   10_SC3K_Urban_Complex.mp3        6097 KB
   11_SC3K_Central_Park_Sunday.mp3       5165 KB
   12_SC3K_South_Bridge.mp3              6239 KB
   13_SC3K_Concrete_Jungle.mp3        6579 KB
   14_SC3K_Night_Life.mp3                    6088 KB
   15_SC3K_Updown_Town.mp3           3494 KB
   16 - The Howling Wind.mp3                 9338 KB
   17 - The Sixth Floor.mp3                       6796 KB
   18 - Desert Sand.mp3                           6778 KB
   19 - City Lights.mp3                               7087 KB
   20 - City of Dreams.mp3                       7240 KB

SimCity 2000 Official Soundtrack (thanks to masochist) (14 songs)
   01-simcity-segue.mp3                  2574 KB
   02-mayor-mombo.mp3                    1392 KB
   03-downtown-dance.mp3                 1838 KB
   04-city-shimmy.mp3                    3080 KB
   05-virtual-village.mp3                1846 KB
   06-railroad-rap.mp3                   1878 KB
   07-traffic-trouble.mp3                2196 KB
   08-subway-song.mp3                    2390 KB
   09-chinatown-concerto.mp3             1430 KB
   10-harbor-hymn.mp3                    2924 KB
   11-repetition-rendition.mp3           1496 KB
   12-disaster-decision.mp3              2348 KB
   13-serious-sims.mp3                   2202 KB
   14-bluesy-berg.mp3                    1394 KB

SimMars Official Soundtrack (thanks to masochist) (16 Songs)
   Rob Astor - Candy Hearts Moon K...    3776 KB
   Rob Astor - East Kinsei Kaigan.mp3    8268 KB
   Rob Astor - Flight In Ursa Mino...    5769 KB
   Rob Astor - Gemini Delta.mp3          3754 KB
   Rob Astor - Get Vertical!.mp3         5449 KB
   Rob Astor - Holographic Nightcl...    3129 KB
   Rob Astor - New Albany Intergal...    3053 KB
   Rob Astor - New Pompeii (Extend...    4254 KB
   Rob Astor - Rigel Center.mp3          3129 KB
   Rob Astor - Tholos Restored.mp3       3618 KB
   Stamp - Maglev.mp3                    5120 KB
   Stamp - Marswalk.mp3                  2618 KB
   Stamp - Martian Icebeta.mp3           3066 KB
   Stamp - Sandbox.mp3                   1812 KB
   Stamp - Spacedirt.mp3                 4718 KB
   Stamp - Untouched.mp3                 6041 KB

The Sims (from website) that fit the SimCity Sound (8 Songs)
   Banana_Blaster.mp3                    3314 KB
   Dance_the_Dawn.mp3                    3983 KB
   First_Kiss.mp3                         429 KB
   Hope.mp3                               380 KB
   HPraveshort.mp3                        247 KB
   PJ_Jammy.mp3                           450 KB
   Shake_it.mp3                           689 KB
   The_Sims_2_Theme.mp3                  4115 KB

Simtropolis User-Produced Original Music (from forum users here) (3 Songs)
   CelticSeconds.mp3                      744 KB
   Mountains1.mp3                         308 KB
   solong.mp3                             628 KB

  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  Total 0 folder(s); 93 file(s)
  Total files size: 390 MB; 390429 KB; 399799561 Bytes


Does anyone know where to find the Music of Simcity 2000 or the original SimCity on mp3 to add to the game?  How about Music from the new SimCity Societies - are those on mp3 at all?  As you noticed above, I added but was careful to keep only what was SimCity-like-ish in the Collection.  

Has anyone else here written and recorded their own music for SimCity?  Or does anyone have any additional songs that 'fit the SimCity Feel' that you would like to suggest?  If so, add to this thread!  (nothing copywritten please.)  Thanks.

- Cougar

EDIT1:  Updated list above with SimCity 2000 Music (thanks to masochist)

EDIT 2:  Updated list above with SimMars Music (thanks to masochist)

EDIT 3:  Updated list above with SimCity 3000 Unlimited missing tracks 16-20.  (thanks to Salvanis)