Adding MP3 Songs in Grand Theft Auto

FOR GRANT THEFT AUTO - VICE CITY

STEP 1: 
Open "Grand Theft Auto - Vice City" folder.

STEP 2: 
Copy all the MP3 Songs you want to play on the MP3 Player of the Vehicles to this "mp3" folder of GTA VC.

STEP 3:
After copying files, open "GTA VC" game. On it, Choose the "Options" from the menu.

STEP 4: 
From "Options" menu, choose "Audio Setup".

STEP 5: 
From "Audio Setup" menu choose "MP3 Player" on "Radio Station" by using Left arrow and Right arrow. Then, Verify it is playing the Songs correctly.

NOTE:
If you Want to change the "Radio" while driving the vehicle. Then, you need to change the "Controller Setup". For that Choose the "Options" from the menu.

From "Options" menu, choose "Controller Setup".

From "Controller Setup" menu, choose "Redefine Controls".

Change the Key for "Radio" in "In Car".

Now you can use the Key preferred by you to change the "Radio".

FOR GRANT THEFT AUTO - SAN ANDREAS

STEP 1: 
Open "My Documents". From it, choose "GTA San Andreas User Files".

STEP 2: 
On "GTA San Andreas User Files", Choose "User Tracks"

STEP 3: 
Copy all the MP3 Songs you want to play on the User Tracks of the Vehicles to this folder.

STEP 4: 
After copying files open "GTA SA" game. On it, Choose the "Options" from the menu.

STEP 5: 
From "Options" menu, choose "Audio Setup".

STEP 6: 
From "Audio Setup" menu choose "User Track Options".

STEP 7: 
From "User Track Options" menu choose "Scan User Tracks".

STEP 8: 
After Completion of Scanning the User Tracks, Choose "Back".

STEP 9: 
From "Audio Setup" menu choose "User Track Player" on "Radio Station" by using Left arrow and Right arrow. Then, Verify it is playing the Songs correctly.

NOTE:
If you Want to change the "Radio Station" while driving the vehicle. Then, you need to change the "Controller Setup". For that Choose the "Options" from the menu.

From "Options" menu, choose "Controller Setup".

From "Controller Setup" menu, choose "Redefine Controls".

From "Redefine Controls" menu, choose "Vehicle Controls".

Now, Change the Keys for "Next Radio Station", "Previous Radio Station" and "User Track Skip".

Now you can use the Keys preffered by you to change the "Radio Station" and to change the "User Tracks" while driving the vehicles.