Would I be able to play MP3s with an 030?

[Thorham]

Well, 14bit is certainly better than 8bit, but "good quality" in absolute terms is stretching it...

Not when you use a proper 14 bit calibration file with a properly down sampled 28000 Khz 16 bit stereo wav. That does sound good. It's absolutely essential, however, that you start with a high quality source, and down sample to 28000 Khz with a program such as Sox (Windows). Sox down samples properly, and in combination with said calibration file (CyberSound) the quality is definitely good (much better than you'd expect). Uncalibrated and/or no good down sampling doesn't sound so good, of course.

[Thorham]

SoX, you say?

If this is a simple port of the Sox I use on the peecee, then I wouldn't want to down sample anything with it, because it's too slow. Even on my old 550 mhz Pentium 3 down sampling with Sox isn't exactly fast.