Same method, only the tool for converting your own song has to be the updated version from 2013...
If you want to replace a specific song, let's say "The Nutcracker Suite Overture" from the klassic radio station, search the song in the [radioname]_radio.xtbl (klassic_radio.xtbl in my example) that you have extracted from misc_tables.vpp_pc. The songs in this file are in the same order as in the game and also are named similar (KLASSIC_ARTIST___THE_NUTCRACKER_SUITE_OVERTURE in my example). Now just look at the length (158010 in my ex.) and search the file with this length (rightclick->properties->details, in my ex. its 2:38 so the filename would be radio_klassic_media_00015.wav). This is the filename you have to change in radio_[radioname]_media.txt Oh and update the length in the xtbl file ofc
If you want to replace a specific song, let's say "The Nutcracker Suite Overture" from the klassic radio station, search the song in the [radioname]_radio.xtbl (klassic_radio.xtbl in my example) that you have extracted from misc_tables.vpp_pc. The songs in this file are in the same order as in the game and also are named similar (KLASSIC_ARTIST___THE_NUTCRACKER_SUITE_OVERTURE in my example). Now just look at the length (158010 in my ex.) and search the file with this length (rightclick->properties->details, in my ex. its 2:38 so the filename would be radio_klassic_media_00015.wav). This is the filename you have to change in radio_[radioname]_media.txt Oh and update the length in the xtbl file ofc