SSH Manually Manage

i am not sure if this has been brought up or not but i like to change my phone has "manually Manage Music/videos".

i know i can just check the box but i like to know if there is a way to change the script to check the box without having to worry about resyncing my phone .

Well i guess i will just run senuti back up my music and then click the box hoping it will work when i connect it to a different computer ...