need help with wireless hookup and a remote

Hi there – I am a speech/language pathologist and work in a school for autistic students.  I currently have a student that has a SanDisk Sansa M240 1GB that is either housed in a hand held speaker (brand name is iLuv) or attached to headphones.  The only way to turn it off is to do it manually.  What we are looking for is a remote setup.  I know there are MP3 players with a docking station with a remote, BUT we still need a wireless hand held speaker and/or headphone set up.  Any suggestions?

Thanks in advance for your help.