What is the easiest way to turn a list of music files into a playlist

Question

I recently switched from windows to linux and the player I was using in windows stored the rating for flac files inside an id3v2 files which clementine, my preferred linux media player, cannot read. I'd like to create a big playlist in one of these formats: m3u, xspf, pls, asx, asx/ini, cue that I can import and manually set the ratings (in bulk). The files I have are the result of find on music files where grep finds "rating=x" or "Rating.x" inside the file.

ETA: The input text file looks like this:

./The Future Sound of London/The Isness/11 - Meadows.flac
./The Velvet Underground/The Velvet Underground/04 - Pale Blue Eyes.flac
./The Velvet Underground/The Velvet Underground/09 - The Murder Mystery.flac
./The Velvet Underground/The Velvet Underground/10 - After Hours.flac
./Sheryl Crow/C'mon, C'mon/02 - Soak Up The Sun.flac
./Sheryl Crow/Tuesday Night Music Club/11 - I Shall Believe.flac
./Sheryl Crow/Tuesday Night Music Club/07 - No One Said It Would Be Easy.flac

Answer 1

You can turn this kind of relative path into an m3u playlist by simply adding the following line to the top of the file (and giving it a .m3u extension).

#EXTM3U

More information on wikipedia.

For reference, this is the first few lines of the new file.

#EXTM3U

./Plain White T's/Every Second Counts/13 - Hey There Delilah.flac
./The Police/Every Breath You Take- The Singles/07 - Every Little Thing She Does Is  Magic.flac
./The Police/Every Breath You Take- The Singles/10 - Every Breath You Take.flac
./The Police/Every Breath You Take- The Singles/11 - King Of Pain.flac
./Roger Waters/Amused to Death/11 - Watching TV.flac

For future reference, here's something you could run from the command line to generate playlists with tags that look like "rating=1" or something similar.

for i in {1..5}; do printf "#EXTM3U\n" > ${i}star.m3u; find . -type f -exec grep -i -l --text "rating.$i" '{}' \; >> ${i}star.m3u; done