nothing. problems like that are always the headphones.
Yes, iPod headphones work in Blackberries, any headphones will work with a Blackberry.
try unplugging the headphones and then switching it off it should work.
Yes, new iPod headphones work with older iPods.
You can use Normal PC headphones and speaker too and Iphone/Ipod headphones will work too
Any headphones should work in an Ipod touch so, yes they will work.
Yes they do! :D
Yes, the Sennheiser HD201 headphones will work with an ipod. You can find sepcifications and ratings of this particular product on the macworld web site.
As long as the headphones have a 3.5MM jack, the audio will work on almost all devices. The remote on Apple headphones usually don't work with other MP3s.
yes
Check your settings.
Yes, you can. Mine work fine with my ipod touch.