Don't buy audio cdrs because they are more expensive than normal cdr and I think you can use normal cdr discs to your hifi stuff if it is your hoppy...
I have tryed to burn data (game) to audio cdr and game work fine there is no any problems...
But still audio cd structure is littlebit different than normal cdr!
If you burn some music to audio cdr and to normal cdr you cannot hear different between of these discs quality.
Some hifi peoples say that I can hear clearly difrent between 40000 herts and 40001. they are only stupid.
Hope this help to solve your problem!