[LAU] which USB card with optical out?

m crazy about clean 2 channel sound output to my high-end Pioneer setup (yes, it is possible..., IMHO). Under XP I was able to get it with foobar software playing my flac files. I used TUrtleBeach Micro Advantage USB sound card with optical output which gave a desired clean sound. Now I have completely migrated to Linux (LinuxMint distro) format, but the TBMA has no linux driver and sound has a annoying clicking sound (like playing old LP). Can any gurus recommend a USB card solution (<$100 if possible) with optical output for the Linux format? I have old Chaintech AV710 sound card with optical output that I may try if someone can verify it will work also. thanks in advance, Merry X-mas. gychang UCI Medical Center Irvine, CA -- http://www.fastmail.fm - Email service worth paying for. Try it for free