i got some of them from western rivers site. there are quite few differant sites on the net that allow you to down load their sounds. alot of them i recorded threw my mic to my computer. using a tape player put the horn up next to the mic. then using the program music match converted them to mp3. it's real easy. if i use recorded sounds i don't like the short loops that almost all digital players use. i can but 4 hours of recordings on the little mp3 player and the recordings can be any length you want. i usually make each of mine about a half an hour long.