HTC has just posted a slew of new ringtones for your device. Most of them sound quite professional.
My favorite is “Simple1” as I use only business-type ringtones on my HTC Diamond. Which one yours? Here is a screenshot of newly available ringtones. The ringtones are in MP3 format. So, they would work on any other phone too
Note that you need to be a member of HTC eClub to download the ringtones. Registration is free.