If you want to get the music title, I'm pretty sure that's (almost) impossible. URM might be able to tell you "
The song you're hearing currently is called 'Background_music.ogg'" -- but that's about it. Unless the game developers decided to name the music file exactly the same as the original title of the song, there's probably no way to identify the name of music within Ren'Py games.
I've extracted a couple of Ren'Py games, and this is what music files usually look like:
- Background_music.ogg
- Background_music2_Brunno.ogg
- Background_music3_Disclo_ultralounge.ogg
- Sexy_music1_monks_topher.ogg
- Sexy_music2_necking_topher.ogg
- at_jodys_1.mp3
- booty_calls_1.mp3
- chillax.mp3
- days_1.mp3
- 1.mp3
- 2.mp3
- caffe_music.wav
...and so on. I've only seen a single game so far where the file names are the actual song titles:
- Chris Zabriskie - Laserdisc.ogg
- Scott Buckley - Nightfall.ogg
- Small Colin - Setup With An E.ogg