This thread is zombified, but I will answer anyway, just in case somebody is having this problem.
If you have bin/cue files, the bin file is the image and the cue file is merely an index. WinCDEmu has always successfully mounted bin files for me on Windows 7 x64 but has always rejected cue files. I’ve even been able to mount the bin file without the accompanying cue file.
OTOH, if you have wav files with cue sheets, you’re probably out of luck with mounting that as a single image with this program. You’ll probably be better off finding a media player that can read and split multi-track wavs (often, media players that support multi-track flac files will also support multi-track wav files). Actually, you might be better off just converting your multi-track wavs to multi-track flacs (same quality, but flac uses lossless compression so it takes less space than a wav). That way, your flacs wouldn’t need an external cue sheet because the index is built directly into the file.