The new Firmware is up
https://www.bitmaintech.com/support.htm?pid=007201407180243004432lBQW28O0633Quote "No beeper altert when there is no immediate hashing work. During the normal mining, Green LED is always on. If there is no immediate hashing work for 1 second, the Green LED will turn off. If it lasts more than 1 minute without hashing work, green LED is kept off and beeper rings"
Just flashed my two S3's with the new firmware. No more beeping! The fiancee will be most pleased!