I have a Linea Emotion MJD 2009. I wanted to add an Aux in Linea so badly , since the in model there is no AUX port. I was getting sick of USB coz sometimes it doesnt read half the songs i copy, it was always messy. I searched in almost all DIY threads to find out how to put AUX and in everythread they were telling that "Press CD button twice and if you get Aux Option then you can add Aux Port". But in my model it AUX doesnt come when you price "CD" button twice. I went almost all Car Audio Shops in my Place ( Thrissur-Kerala) to know if there is any chance. I got depressed in the END . Then i finaly asked a mechanic to open it up for me since i didnt have the key to open the Audio System. After reading every thread about installing Aux i finally got an idea to install AuX around midnight. I didnt waste any time. I rushed to car , pulled out the Audio System And pulled out the Blue Yellow Green Cable out of the Audio system I removed each cable 1 by 1 and understood that Blue is for CD Changer and Yellow is for USB and Green I dont know So i took my AUX Cable , Cut the one end of it.. Like this And i plugged these into the yellow Cable along with the USB wires after checking the Left Right wires of Aux. Now Fingers Crosed, Turned on the Audio System (Ignition is OFF). Pressed on the CD button for getting Media Player Option and played Song from Phone and Taddaaaaaaaaaa it worked!!! Felt so Good xD Now again i turned on the Ignition and Played song, but then the music was coming from both USB and Phone. So i downloaded an silent track and copied it to the USB http://www.squobble.com/pub/audio/sleeper4.rar <-- Link for silent track And then again played the silent track on USB and Played song on Phone and it worked. YEY.. Now the only problem with this setup is sound is lil low... Like i have to increase it to around 10~15 .. Any1 have any idea how to solve that ?