Ive successfully extracted the music from tony hawks pro skater 3 and its the same for tony hawk 4 both Tony Hawk underground games and american wasteland you need MF audio and you load up the MUSIC.WAD file in MFAudio, you dont need the music.hed file the music tracks are in the MUSIC.WAD file. In MFAudio set the interleave at 18000 bytes frequency 48000hz channels 2 and leave offset alone now hit play and you should hear music, if your doing this with tony hawk 3 the first song you hear is alien ant farm's song Wish, if it sounds clear like it does in the game your doing good now set the output file to output to Microsoft RIFF uncompressed wav, set frequency at 48000, channels 2, and the interleave should be greyed out. then go to save as and give your wav file a name (I used THPS3 music for tony hawk 3) and choose where to save the file (I created a folder on the desktop THPS3 Music) hit ok or save then hit process and then go grab a cup of coffee or something and when conversion is done youll hear a sound, then youll get a monster long wav file of all the music and background sound effects youll need to cut each song out of the long wav file (I cut each one out and made it into a high quality mp3) do this for all the rest of the songs you want, use a program like goldwave or audicity or some other wav editor, it is a bit of work extracting the music from these games but i only do it for fun and for my personal enjoyment of the music and for educational purposes (I learned something new) good luck and comment back if this worked for you or not and maybe i can help