free for non-commercial, a comment line ("Music taken from MusicFillingStation.de") or link is needed. Commercial users have to ask for usage & conditions.
more single instrument loops than full music loops or sound effects
free for non-commercial, credits demanded for commercial
basically a pay service, but the free account allows 5 free downloads a month
free to use for commercial and non-commercial
license differs from sound to sound (freeware/linkware/shareware)