amiga amp mp3s forget it

[pVC]

I think it can if you make quality bad enough, but it's an another matter if it's sensible anymore. Wav files take lots of storage space, but if you have it enough why not. Good compromize could be using mp2 format, which isn't as heavy as mp3, but compresses still quite well.

[pVC]

Nice!  I just use Linux, the file manager sees audio tracks as Wav and I just copy paste.

Even old Amiga can do that, some CD filesystems support it.

There's no need to rip CD:s under other OS if you have CD drive on your Amiga. Besides that filesystem level way, there are lots of rippers and encoders available from dedicated programs to burninng apps like MakeCD, which can do it.