Anyone else having tempo issues with Loop Loft drum loops?`

I have purchased a number of drum loops from Loop Loft. They're generally ok, but some play only at 1/2 speed.
 
Ex: The stated tempo for a given loop is 77bpm, for an 8-beat loop.
Sonar reads (in loop construction view) as 154bpm and 16 beats.
With the project tempo set at 77, the loop plays very slow and choppy (apparently at ~38bpm).
In order to get the loop to play at 77bpm, the project tempo must be set to 154.
This is, of course not workable, because the 8 beat loop is now spread out over 4 measures (should be 2 measures).
So now there are double the proper no. of measures, making audio recording untenable, and any 'normal' loops added to the project will be playing at double tempo.
 
Does anyone know of a fix for this? Is it possible to edit the bpm and number of beats on an audio loop? (.wav or .rex2).
What am I missing? Or do I need to just lose those oddball loops?
 
Thanks in advance for any input!
 
~S