Here's the NEW DERIVABLE INVISIBLE STEREO! Great derivation price!(so you can earn more from your sales) Do not buy it but only DERIVE from it if you're a DEVELOPER. ADD A NEW SOUND : Open the previewer ,click on " ACTIONS" and on " ADD ACTION " ,(don't click on add ensemble,you don't need that )then browse a song from you pc,it must be in OGG format 1) remember the file size limit for a product is 2mb so pay attention to that.. you can see that on C :/programs/imvu tools /examples/" your file" 2)convert the file from mp3 to ogg (you can use “DB power amp music converter” search for it on internet..it’s free) put a lower bitrate but please keep the frequency to 44.100 (for a good sound quality) don’t try to put more then 2 /3 songs per product (at least about 6.30/ 7 min.. maximum..but depends of the files) 3) Rename the song with a short name and put a short trigger word on the previewer and... Apply changes ,save you work and here's your new Stereo ready to play:-) REMEMBER : do not put copyrighted music but :Classical music ,royalty free music,chat sounds effects or your nice voice singing in the shower it's good lol HAVE FUN! CIAO:)