I've compiled an M3U playlist that, as I type, I'm listening to on Windows Media Player. Still, I'm just wondering if the game itself has a playlist built within it that the pipboy radio refers to so it 'knows' in what order it should play it's songs and Three Dog's radio broadcasts. Otherwise, if anyone's done something similar, please post the M3U code here! Here's my playlist. Copy it into a file in Notepad and save it as GNR.m3u if you like. It only runs for an hour, but just remember to have shuffle turned off!

#EXTM3U#EXTINF:0,radiogalax_radiognrnewslin_00057b18_1.mp3\Music\Sounds\GNR Radio\News intro\radiogalax_radiognrnewslin_00057b18_1.mp3#EXTINF:0,Reilly's Rangers News (All saved but one, Theo).mp3\Music\Sounds\GNR Radio\Reilly's Rangers News (All saved but one, Theo).mp3#EXTINF:0,radiogalax_radiognrnewspos_0005c96e_1.mp3\Music\Sounds\GNR Radio\News post\radiogalax_radiognrnewspos_0005c96e_1.mp3#EXTINF:0,radiogalax_radiognrmusicin_00057b0d_1.mp3GNR Radio\Song Intro\radiogalax_radiognrmusicin_00057b0d_1.mp3#EXTINF:0,Happy Times.mp3Fallout 3 - Galaxy News Radio Music\Happy Times.mp3#EXTINF:0,Blue Moon.mp3Frank Sinatra\Blue Moon.mp3#EXTINF:0,11 - Ray Charles - Over The Rainbow (Feat. Johnny Mathis).mp3Ray Charles\Genius Loves Company\11 - Ray Charles - Over The Rainbow (Feat. Johnny Mathis).mp3#EXTINF:0,radiogalax_radiognrnewslin_0005c8f9_1.mp3GNR Radio\News intro\radiogalax_radiognrnewslin_0005c8f9_1.mp3#EXTINF:0,Vault 101 News - Vault Girl Goes Way Back Home.mp3GNR Radio\News Story\Vault 101 News - Vault Girl Goes Way Back Home.mp3#EXTINF:0,radiogalax_radiognrpsaintr_0005c8f6_1.mp3GNR Radio\Public Service Announcement Intro\radiogalax_radiognrpsaintr_0005c8f6_1.mp3#EXTINF:0,radiogalax_radiognrpsainfo_0005c968_1.mp3GNR Radio\Public Service Announcement Info\radiogalax_radiognrpsainfo_0005c968_1.mp3#EXTINF:0,radiogalax_radiognrpsainfo_0005c967_1.mp3GNR Radio\Public Service Announcement Info\radiogalax_radiognrpsainfo_0005c967_1.mp3#EXTINF:0,radiogalax_radiognrpsainfo_0005c966_1.mp3GNR Radio\Public Service Announcement Info\radiogalax_radiognrpsainfo_0005c966_1.mp3#EXTINF:0,radiogalax_radiognrmusicin_00057b08_1.mp3GNR Radio\Song Intro\radiogalax_radiognrmusicin_00057b08_1.mp3#EXTINF:0,Easy Living.mp3Billie Holiday\Easy Living.mp3#EXTINF:0,Paper Moon.mp3Ella Fitzgerald\Volume One\Paper Moon.mp3#EXTINF:0,A wonderful guy.mp3Fallout 3 - Galaxy News Radio Music\A wonderful guy.mp3#EXTINF:0,radiogalax_radiognrmusicex_0005c92a_1.mp3GNR Radio\Song Conclude\radiogalax_radiognrmusicex_0005c92a_1.mp3#EXTINF:0,radiogalax_radiognrpsaintr_0005c8f3_1.mp3GNR Radio\Public Service Announcement Intro\radiogalax_radiognrpsaintr_0005c8f3_1.mp3#EXTINF:0,radiogalax_radiognrpsainfo_0005c95d_1.mp3GNR Radio\Public Service Announcement Info\radiogalax_radiognrpsainfo_0005c95d_1.mp3#EXTINF:0,radiogalax_radiognrpsainfo_0005c95c_1.mp3GNR Radio\Public Service Announcement Info\radiogalax_radiognrpsainfo_0005c95c_1.mp3#EXTINF:0,radiogalax_radiognrpsainfo_0005c95b_1.mp3GNR Radio\Public Service Announcement Info\radiogalax_radiognrpsainfo_0005c95b_1.mp3#EXTINF:0,radiogalax_radiognrpsainfo_0005c95a_1.mp3GNR Radio\Public Service Announcement Info\radiogalax_radiognrpsainfo_0005c95a_1.mp3#EXTINF:0,radiogalax_radiognrmusicin_00057b0f_1.mp3GNR Radio\Song Intro\radiogalax_radiognrmusicin_00057b0f_1.mp3#EXTINF:0,I don't want to set the world on fire.mp3Fallout 3 - Galaxy News Radio Music\I don't want to set the world on fire.mp3#EXTINF:0,One O'Clock Jump.mp316 Big Band Hits, Vol. 10\One O'Clock Jump.mp3#EXTINF:0,Ain't That A Kick In the Head.mp3Frank Sinatra\Ain't That A Kick In the Head.mp3#EXTINF:0,radiogalax_radiohello_00057aff_1.mp3GNR Radio\Radio Greeting\radiogalax_radiohello_00057aff_1.mp3#EXTINF:0,radiogalax_radiognrnewslin_0005c8fb_1.mp3GNR Radio\News intro\radiogalax_radiognrnewslin_0005c8fb_1.mp3#EXTINF:0,Wasteland Survival Guide News.mp3GNR Radio\News Story\Wasteland Survival Guide News.mp3#EXTINF:0,radiogalax_radiognrnewspos_00057b03_1.mp3GNR Radio\News post\radiogalax_radiognrnewspos_00057b03_1.mp3#EXTINF:0,I'm movin' on.mp3Ray Charles\Georgia on My Mind [Fame]\I'm movin' on.mp3#EXTINF:0,Putting on the Ritz.mp3Golden Memories\Putting on the Ritz.mp3#EXTINF:0,Anything Goes.mp3Fallout 3 - Galaxy News Radio Music\Anything Goes.mp3#EXTINF:0,radiogalax_radiognrmusicex_0005c92b_1.mp3GNR Radio\Song Conclude\radiogalax_radiognrmusicex_0005c92b_1.mp3#EXTINF:0,radiogalax_radiognrpsaintr_0005c8f4_1.mp3GNR Radio\Public Service Announcement Intro\radiogalax_radiognrpsaintr_0005c8f4_1.mp3#EXTINF:0,radiogalax_radiognrpsainfo_0005c959_1.mp3GNR Radio\Public Service Announcement Info\radiogalax_radiognrpsainfo_0005c959_1.mp3#EXTINF:0,radiogalax_radiognrpsainfo_0005c96c_1.mp3GNR Radio\Public Service Announcement Info\radiogalax_radiognrpsainfo_0005c96c_1.mp3#EXTINF:0,radiogalax_radiognrpsainfo_0005c96b_1.mp3GNR Radio\Public Service Announcement Info\radiogalax_radiognrpsainfo_0005c96b_1.mp3#EXTINF:0,radiogalax_radiognrpsainfo_0005c96a_1.mp3GNR Radio\Public Service Announcement Info\radiogalax_radiognrpsainfo_0005c96a_1.mp3#EXTINF:0,radiogalax_radiognrmusicin_00057b07_1.mp3GNR Radio\Song Intro\radiogalax_radiognrmusicin_00057b07_1.mp3#EXTINF:0,Civilization.mp3Fallout 3 - Galaxy News Radio Music\Civilization.mp3#EXTINF:0,Ciribiribin.mp3Bing Crosby\The Best Of Bing Crosby\Ciribiribin.mp3#EXTINF:0,Jolly Days.mp3Fallout 3 - Galaxy News Radio Music\Jolly Days.mp3#EXTINF:0,Mighty, mighty man.mp3Roy Brown\Mighty, mighty man.mp3#EXTINF:0,radiogalax_radiognrmusicex_0005c925_1.mp3GNR Radio\Song Conclude\radiogalax_radiognrmusicex_0005c925_1.mp3#EXTINF:0,radiogalax_radiognrnewslin_0005c8f9_1.mp3GNR Radio\News intro\radiogalax_radiognrnewslin_0005c8f9_1.mp3#EXTINF:0,radiogalax_radiognrnewslin_0005c8fa_1.mp3GNR Radio\News intro\radiogalax_radiognrnewslin_0005c8fa_1.mp3#EXTINF:0,Underworld News - Murderess Vault Girl Sighted.mp3GNR Radio\News Story\Underworld News - Murderess Vault Girl Sighted.mp3#EXTINF:0,radiogalax_radiognrmusicin_00057b0b_1.mp3GNR Radio\Song Intro\radiogalax_radiognrmusicin_00057b0b_1.mp3#EXTINF:0,Butcher Pete (Part 1).mp3Fallout 3 - Galaxy News Radio Music\Butcher Pete (Part 1).mp3#EXTINF:0,04 - Ray Charles - Sorry Seems To Be The Hardest Word (feat. Elton John).mp3Ray Charles\Genius Loves Company\04 - Ray Charles - Sorry Seems To Be The Hardest Word (feat. Elton John).mp3#EXTINF:0,Moonlight In Vermont.mp3Ella Fitzgerald\Volume Two\Moonlight In Vermont.mp3#EXTINF:0,Jazzy Interlude.mp3Fallout 3 - Galaxy News Radio Music\Jazzy Interlude.mp3

Keep the playlist in the same directory as all the rest of the songs. There will be some that don't work, because I've added a few of my own, but you can see the basic syntaxt for this code and use that same syntax to add your own songs. Otherwise, download Playlist Creator 3. It'll highlight in green the songs that will work and highlight in red the ones that won't.