deleting factory ringtones

i have a moto v200 and use phonetools to add ringtones to my phone,but how do you delete the factory ones, like tada,chimes,chord,claps,ding,drum,etc... there is no delete option for these,they just take up space and ill never use them.
i have no problem adding tones,just deleting them.

i would also like to delete the stupid pictures like wow,winking,skeptic and other predefined animations. if someone has the time to explain these procedures to me id appreciate it,thanks!

i was wondering about this also

I've been doing some research on this and found it's not a good idea to delete some of the factory ringtones because it will cause your other ringtones to stop working when I find out more I'll let everyone know.

Ok this is what chisdg had to say on the subject (knows alot more than I do about motorola phones)
His words
you can deleate most of them but leave bas ringtones if u want motomixer to work
once u have deleated them delate tonedb. and temptonedb.
and make sure all your ring styles are set to silent or u will have a pain in the a** trying to get it to work again, end qoute Also if you do delete them be sure to keep a back-up so if need be, you can do the trial and error method.