Question:

Plextor drives that don't support hardware decoding of the CD+G format.

Answer:

These drives may work for Karaoke under software that is specially designed to use Software Decoding for CD+G.  If the software is designed to use Hardware Decoding, then these drives will not work.

These are known Plextor drives that DO NOT support hardware decoding of the CD+G format.

Here is the FAQ with a list of drives that do support Hardware Decoding http://www.mtu.com/kb/index.php?action=kb&article=16