Humm
prueba:
{exec banshee --query-title | cut -d : -f2}
PD: lo de : cut -d : -f2 es para quedarme con el titulo solo:
Ademas del titulo tienes bastantes opciones como:
--query-artist Get artist name for current playing song
--query-album Get album name for current playing song
--query-title Get track title for current playing song
--query-genre Get track genre for current playing song
--query-duration Get duration of current playing song in seconds
--query-position Get position of current playing song in seconds
--query-rating Get track rating for current playing song
--query-uri Get URI of current playing song
--query-cover-uri Get URI of the album cover of current playing song
--query-status Get player status (-1: Not loaded, 0: Paused, 1: Playing)
Espero que te sirva de ayuda ^_^