Number of spindle fibres during Metaphase?
The number of spindle fibres is actually more than total number of kinetochore pairs. The fibres attached to kinetochores are called K-fibres and the others are called polar fibres. I cant surely say that there is exactly one K-fibre per kinetochore but as per its definition and from the microscopic images you can conclude that there is one per kinetochore. 

In a normal mitotic metaphase there are 2n kinetochore pairs, and as you rightly calculated, there will be 96 K-fibres. 

In meiosis-I there is a tetrad which has 2 kinetochore pairs but the ones in sister chromatids behave as a single unit. So there would be 23 fibres. 

The fusion of kinetochores of sister chromatids is relaxed in meiosis-II and again a separation would require 23 fibres.

Please have a look at this article. Molecular biology of Meiosis nicely explained:
http://www.sciencedirect.com/science/article/pii/S0092867403000837

More about K-fibre formation:

http://link.springer.com/article/10.1007/s00412-005-0028-2/fulltext.html