PC to Tube Pre/Amp

I've been using a Linksys Music Bridge to transfer the signal from tunes playing through WinAmp between a PC hardrive and an Audio Research tube pre-amp.

Worked great for about two years and now the Music Bridge will not connect to the PC. Tried uninstall-reinstall and everything else and even Linksys admits the Music Bridge wasn't their best product(my wife works there so it OK to say that). The have a new Media Hub coming out but it's much more capability and modification than I want.

Just looking for a simple digital method to connect my Toshiba PC to the Pre-amp input and play lossless music through Winamp from the hardrive.

Thanks for any insight.