Well I use this:
http://aminet.net/package/disk/misc/diskimage.m68k-aosDiskimage device allows the user to mount adf images in addition to some other disk image formats as well. It includes an installer, and if i remember correctly, it will copy all mount files to Devs/DOSDrivers on your boot partition. If this is the case, I will recommend that you move them to Storage/DOSDrivers instead since there is no point in all of them being mounted on startup.
In order to access an adf image file, you must first mount the virtual drive by either double-clicking the IDF0 mount file, or by typing "mount IDF0:" in a shell.
An easy to use program called DiskImageGUI is also included, and after you have started it, you can open it from the Tools menu in your WB menu. This GUI has four buttons which allows you to Insert, Eject or Write Protect the disk image, and the last button refreshes the list below.
If you have mounted IDF0:, it should now be included in the list, and all you have to do is click the Insert button, select an adf file and voila - there you go!
But have in mind that what "fitzsteve" mentions about non DOS disks also applies here.
One last thing: It is possible to copy and delete files to/from the mounted adf image, but this might result in a corrupted adf file, so beware!
