I created 2 ringtones tonight using GarageBand.. I have created at least 10 others before this. For some reason, when I set one of the 2 newest as the default ringtone, the phone plays Marimba instead. The other ones work fine, just these two are affected. Any idea why this is? One is 18 seconds, the other 15 seconds. Both synced using iTunes 8.2b10, both created in GarageBand. Phone OS is 3.0 Beta 5.. 