$ gem install lastfm-m3u
$ lastfm-m3u --init
Follow instructions to add your Lastfm API keys

LastfmM3u Playlist Creator
To get started: lastfm-m3u --init

Usage: lastfm-m3u [options]
Note: defaults to filename-only search. id3/both search is more thorough, but much slower

Examples:
  lastfm-m3u -a "Biosphere,Brian Eno"
  lastfm-m3u -a Biosphere
  lastfm-m3u -a Biosphere -t both
  lastfm-m3u -a Biosphere -d ~/music/Biosphere


Options:
    -t, --type TYPE                  Select search type
                                       (f,i,b,file,id3,both)
    -i, --init                       init lastfm API access config
    -a "x,y,z"                       one or more artists separated by commas (enclose with quotes if any spaces)
    -d, --directory DIR              music directory
    -p, --path PATH                  Specify path to use for m3u file entries (e.g. MPD requires a path relative to its music directory - i.e. -d /home/user/music/Biosphere -p /home/user/music where the second one is MPD's root)
    -l, --limit NUM                  Specify limit of tracks to fetch from Last.fm (defaults to all)
    -f, --not-found                  Show not found
        --debug [LEVEL]              Enable debugging output (Optional Level :: 0=all, 1=info,warn,error, 2=warn,error, 3=error)
    -v, --version                    Show LastfmM3u version
    -h, --help                       Show this help message