I had done this along time back. I had nothing to do, so decided to write this as NFSU has some great tracks.
You will need a small tool called NFS Music Extractor . Once you've downloaded the utility, you will need to copy the file STRM_Music_UGO_MB.ast (Typically found under C:\Program Files\EA Games\Need For Speed Underground\SNDSTREAMS) into the same directory where you extracted the Music Extractor Utility. Then just run the .exe file and it will steadily extract all the music files to WAV format. You can then burn them straight to CD, or encode them as another format (e.g. MP3) to add to your music library.
If on the other hand you want to import different music into your NFS Underground, you can use this NFS Music Importer to import your music files into NFS:U's native .AST format.
:NOT TRIED WITH NFSU2
Repps if valued.
You will need a small tool called NFS Music Extractor . Once you've downloaded the utility, you will need to copy the file STRM_Music_UGO_MB.ast (Typically found under C:\Program Files\EA Games\Need For Speed Underground\SNDSTREAMS) into the same directory where you extracted the Music Extractor Utility. Then just run the .exe file and it will steadily extract all the music files to WAV format. You can then burn them straight to CD, or encode them as another format (e.g. MP3) to add to your music library.
If on the other hand you want to import different music into your NFS Underground, you can use this NFS Music Importer to import your music files into NFS:U's native .AST format.
:NOT TRIED WITH NFSU2
Repps if valued.