Sorry forgot: it is the case. you need to follow these directions
1st.You need to remove the sd card shown below on htc website:
Storage card (unmount the sd card also shown there)
Then what you need to do is use the cable that came with your phone and connect it to your computer.
A window will pop up on your phone (if screen is locked, unlock then slide down notifications bar, select ongoing, charge only, then choose media sync.
Then go onto your computer, cut the music off your phone.. It should say portable device, HTC one v then open that it should say htc_stoarge (it was spelled wrong on my phone) check all the folders if it is not just sitting out there in htc_stoarge
Copy it into a folder on your computer(IMMEDIATELY TO MAKE SURE NOTHING HAPPENS)
Put the SD card back in. unplug and re-plug your phone. Then choose disk drive from the notification bar.
Then paste the music into the new device that reads removable disk in computer (windows7) my computer (win xp) you can do this two ways with or with out the folder.
now unplug your phone. go to the music application and let it find the music. (because all the apps get music from the music app first.) then open your app and see if it worked
hope I helped!
P.S. if that didn't solve your problem, get ringtone maker by big bang inc.