What kind of input are you guys using for the amp?
i just use a regular stereo 3.5mm male jack to jack audio cable, between my pc onboard sound line out, and the lepai amp 'mp3' audio input. you could use stereo 3.5mm male jack to 2x male rca plugs if you prefer.
some tips if you get the lepai:
1. get the 'lepai
lp-2020a+' model, not an earlier revision.
2. if you plan to turn it up very loud, consider using a 12v 4A-6A adapter as opposed to something like a 12v 2A adapter. if you read some reviews about the amplifier you will notice other people recommending this. (i use a 12v 5A adapter)
3. if you buy it brand new/unused the amplifier has a kind of 'burn-in' time of a few hours after which the bass becomes stronger and the sound opens up (you also hear people chatting about this in the reviews).
Is there an internal card you can use to wire the speakers into the computer instead of an amp?
sorry i have no idea about that