Please let us define the begin of the "listenable" music.
Especially for "electro original remix". The real good music starts often at 2,30min.
Default value : 0
Personalisable for each music in each playlist.
(Sorry for the approximate translation)
A similar has already been suggested. Please add your kudos and support there. http://community.spotify.com/t5/Spotify-Ideas/Isolate-parts-of-a-track/idi-p/40013