Your search for "MP3" revealed the following:
Sandisc SDMP3
$488.00SanDisk Soundmasking MP3 Player loaded with Soundmasking Music.Integrate into your existing Soundmasking / Paging / Background Music System or use...
Soundmasking Wave File
$47.75emailed Soundmasking FilePlay on your computer speakers or on your SmartPhone Specifications
RPSB Series: MOMENTARY CLOSURE WALL-MOUNT SWITCH
$64.00Single pole, single throw (SPST) low voltage switch with MOMENTARY CLOSURE to activate equipment connected with a remote power control...