Get error message: NOT SUPPORTED trying to play mp3 file

[Flash Harry]

Generally 44.1Khz is the industry standard, higher rates can improve quality of the higher frequency sounds and some recording gear has 48KHz options.

The idea comes from a chap called Nyquist, who worked out that sampling had to be done at 2.2 times the highest frequency you want to sample. 20khz is generally all you need to record (Audiophiles - you shouldn't argue against this because Audiophiles don't sample).

The 0.1 is the extra bit in the maths I don't remember any more.

Boring bit over.......

[64Guitars]

The 44.1 kHz sampling rate probably also applies to WAV files as well, since I also imported a NOT SUPPORTED WAV file out of Audacity.

Yes, WAV files must also have a sampling rate of 44.1 kHz.

I'll just press that magic Project Rate button in the lower-left corner.

You can make it the default by selecting Preferences from the Edit menu (or press Ctrl-P), then selecting the Quality page. There you'll see a drop-down box for Default Sample Rate. Set it to 44100 Hz.

[Satchwood]

Thanks Flash & 64 for the lesson in audio file formats - very helpful!  Plus, I don't have to pull my hair out anymore