Dunno what format you need them, but here....and make sure you read the FAQ's there. They're FAR harsher on newbies than here.
www.ideninsider.comaccount currently suspended...been up for 3 years...dunno what's up right now.
www.howardforums.comHoFo is THE place to find out about your cell phone. Others will specialize, but no one's as comprehensive.
www.nextelnoob.comhttp://www.idenstop.comEach of these sites should give instructions on how to create your own ringtones, but that's for wav's. They'll also have threads solely dedicated to midi's.
For what it's worth, midi's are a hit/miss proposition. Sometimes they sound dynamite, other times, they suck....hard.
Where'd you get the phone from? I've got the "one plug, up to 5 phones" setup with 3 handsets. LOVE their phones, but it's getting to be time for a replacement, and yours sounds cool.
*dunno if you downloaded their ringtone converter, but here's the link*
Ringtone Converter