I didn’t say I wanted to delete the files. You can’t delete files from a pressed audio CD (there aren’t even any!). I said I wanted to delete the entries added to the SQLite database once the CD is ejected, for obvious reasons.
There is a page in the nslu2 Linux wiki that reports encoding a 2:20 long MP3 from WAV taking seven minutes to perform. Just encoding (ripping not included) a full 60 minute CD would thus take some 190 minutes..
Ripping is done on my HTPC running Mythbuntu. This takes much less time than 190 minutes.
BTW how do you tell Firefly to rescan, via the terminal?