Here's the SharkieROM Additional Sounds Cab and two zips of the audio files from the "SharkieROM Addtional Sounds" .cab that I removed from this version, if anyone wanted them!
They're split in two because the file was too big as one to upload.
In the cab I had them all going into "ApplicationData\Sounds". So, you might want to put them there as well. This seems to be where they have to be in order for them to be accessed by the appropriate notification selection. As in, wanting to set one of them as an alarm, for example, but it doesn't show up under the alarm choices. This area is still a little bit confusing to me.
SharkieROM Additional Sounds .cab <--click it!