Hi, I am a Mailman and I recently started a new route that has me in the Postal truck all day instead of walking all day. I jury rigged a pair of Sony personal speakers (I don't know the model number) to use with the Sansa M240 I use in the office while I sort the mail for delivery. The new route is in a rural part of town and it's very dusty, even though I have a silicone case for the M240 I decided to get a 2gig Sly mp3 player at Fry's for $11. At $11 I figured it was cheap enough that I could risk it being junk and if all the dust and dirt damage it no big deal. It has so far been a good surprise. I have been using it everyday for 3 weeks and have had no problems. It sounds OK for what it is and is loud enough to hear over the engine noise(I don't even use the max volume). Anyone out there have any experiences with this model or Co. ??