mediagui

Want to record self-made MDs from MZ-R50 to PC. Thinking of using USB Audio Interface. (Only option I have found to solve this problem for older MDs.) Looking at Edirol UA-1EX. Anyone have experience using UA-1EX for this purpose? Also what software (WinXP) used. Note: Also looked at M-Audio Transit said to transfer MD to PC, but reviews not so good. Any thoughts welcome. Want to keep using my R50. Note: UA-1EX has optical line-in and standard line-out, among other features. Thanks.