Playing CDs with AmigaAMP

When I try to use the file requester to select a CD track in AmigaAMP nothing shows up. I have to open the CD icon and drag'n'drop the file onto AmigaAMP for it to play. Any clues as to why the file requester isn't working?

@Valiant

same stuff happened here until I openet config, system tab and changed the pattern to :

#?.(mp3|mp2|aiff|wav)|Track#?

(it looks ghosted but it editable once you click on it, restart of the program is needed afair)

Jack

Edit:
BTW: very ineffective way to play CDDA (imho), it reads all the data instead of using internal playback of the device...

@Jack

Thanks, Jack. That worked for AmigaAMP; unfortunately although the files now show up in Amplifier also they don't load if I double-click on them. Oh well...

@Jack

Yes, ineffective it might be but OS4 hardware does not
support digital input if I recall. So the sound quality may
suffer. CD input is only analog on A1 hardware.

There does exist a digital input but it doesn't work or
isn't supported if I recall my conversations with DaveAE
correctly. On ?A1-C anyway. Sound cards may be different.

IMO to read it digitally and send it out digitally is
the best way of preserving the audio quality.
Btw I don't think streaming CDDA audio (1411Kbit/s) is
that demanding on the system.

@samwel

Quote:

AmigaAmp used sndfile.library (m68k) to access aiff files, dunno how much overhead is there (mayne not at all when all io is ppc native), but I prefer the bultin analog playback of the CDDA. Why not use it. Setup freedb/cddb with playcd and viola!)

Edit: and analog playback is less noisy than extaction the sdda via software...

Jack

@Jack

I don't think there's much overhead using sndfile.library.
16bit 44.1KHz stereo files aren't that demanding to
stream. As I wrote before, 1411Kbit/s about 140Kb/s.
Compare this to video files and you'll notice this is
no more than 1/4 of the bandwidth. Also the audio is
uncompressed so the CPU hardly has to do anything
when the system uses DMA.

Yes you can use the analog playback if you like.
It doesn't use the CPU at all, that's certainly a plus.
If playCD crashes the CD will continue to play though.

But if you hook up your computer to some serious HiFi
equipment you would probably want to send it out
fully digital. Even on cheaper HiFi systems it's preferable
to output digitally. Unless you have a really really good
soundcard.

Sound output should not be noisier, maybe a problem
with the sound player? Or atleast its plugin/datatype?

Also when controlling the CD drive with applications like
PlayCD you will not have the option of using a equalizer.
The sound is directed to the sound chip bypassing the
system.