Datebook and Pocketquicken install and hotsync normally. Audible Reader, however, insists on being reinstalled on every hotsync, then refuses to look in my internal SD card for books. Player will only download that part of a book that will fit in internal memory. I consider it much easier to convert the Audible file to mp3 with Goldwave, move it to the card, and listen with Media Player. The other apps that were on my Zire 72 all have much better substitutes that are native to the NIT (Xword, for example, is at least the equal of Crossword Puzzles for Palm OS).