line in support for LMS

Hi all,

I have been searching for a solution of my issue for quite some time now.
I need to allow my kids to use mobile phones (or literally any music device with a headset plug) to play over LMS. They want to celebrate their parties using friends music (which they normally carry in phones or ipods).

Is there any plugin that i did not find so far? Or any other solution to support line-in as a source? Any idea is welcome!

thx for any help! even a workaround solution is an option.

cheers
mart