Quote Originally Posted by kexodusc
Just for music?

Hard: CD, DVD-A, DVD, SACD, HDCD, BluRay, and even several Dual-Discs (blend of DVD-a/CD)
Soft: FLAC, ALAC, WMP, mp3, OGG, .wav and a few .aac, off the top of my head.

I'm sure I've left something out.

I tend to not be too anal about the format, but I always choose highest quality over lowest if available. For example, FLAC over mp3, SACD over CD, BluRay over DVD, etc.

That said, I can listen to mp3's on my stereo and still enjoy the music immensely. There's no bad here, just better...
Kex summed up my situation perfectly. I've considered vinyl but I'm not that labor intense.