You can, with some adapters. Make sure you have amplified PC speakers (will either take batteries or have an AC adapter, not just a headphone plug) and then get an RCA stereo to 1/8" minijack adapter from RadioShack or other electronics store. Then plug the Red and White plugs from the Wii into the adapter, and the speakers' headphone plug into the other end. Now turn on the speakers, turn on the Wii (plug the yellow into your TV) and play
The adapter will look something like:
Code:
0))white-------\
>-----(((0 1/8" headphone (minijack) connector
0))red---------/