For ISO6990 & UDF discs you can mount the images as if they were disks.
mount -t iso9660 <filename>.iso mountpoint/ -o ro,unhide,loop
the "loop" option is where the magic happens.
I don't know what a DAA disk is.
Look at the image file with the "file" command. It may be an alias for ISO rather than an actual filesystem.
file <filename>.daa
Also look in your package manager. There may be a konqueror slave plugin that will read ISO files. There is one for konqueror for audio discs which have no fileysystem. Entering "audiocd:/" in the address bar will result in the music being presented in various formats. These are psuedo files. Dragging the format you want (such as the MP3s or OGGs) will start the conversion process and write the results in the destination.
Here is a list of related packages:
Code:
S | Name | Summary | Type
--+----------------------------+------------------------------------------------------------------------------+-----------
| ISOmorphin | ISOmorphin is an ISO mounting manager for GNOME | package
| acetoneiso2 | A complete software to manage CD/DVD images rich of features | package
| b5i2iso | Utility to convert a BlindWrite BIN image to the standard ISO-9660 format | package
| ccd2iso | CloneCD image to ISO image converter | package
| cdi2iso | Utility to convert DiscJuggler image to the standard ISO-9660 format | package
| daa2iso | Convert PowerISO DAA Files to ISO9660 | package
| furiusisomount | Gtk+ Interface to Mount ISO, IMG, BIN, MDF and NRG Image files | package
| fuseiso | FUSE module to mount CD-ROM images with ISO9660 filesystems in them | package
i | genisoimage | A program for creating CDs in Linux | package
| improvisor | Impro-Visor is a music notation program for jazz musicians | package
i | iso-codes | ISO Code Lists and Translations | package
i | iso_ent | Character Entity Sets for ISO 8879:1986 | package
| isomaster | Graphical CD image editor for reading, modifying and writing ISO images | package
| isorelax | Public interfaces useful for applications to support RELAX Core | package
| isorelax-javadoc | Public interfaces useful for applications to support RELAX Core | package
| kde4-acetoneiso2 | A complete software to manage CD/DVD images rich of features | package
i | kio_iso | KIO slave to access ISO images | package
| kiwi-desc-isoboot | OpenSuSE - KIWI Image System ISO boot | package
i | libiso9660-5 | CD-ROM Access Library | package
| libisofs5 | Library for ISO 9660 Disk Image Creation | package
| libpisock-devel | PalmPilot Development Header Files | package
i | libpisock9 | Pilot-Link Library for Palm devices | package
| mdf2iso | Utility to convert an Alcohol 120% image to the standard ISO-9660 format | package
| nrg2iso | Nero .nrg Format to .iso Converter | package
| pdi2iso | Utility to convert an instant copy bin image to the standard ISO-9660 format | package
| python-pisock | Pilot-Link Library for Palm devices - Python bindings | package
| uif2iso | Convert MagicISO UIF Files to ISO9660 | package
| unison | A file synchronization tool | package
| xbiso | xbiso is an iso extraction utillity for xdvdfs images | package
It seems to me that you are still accustomed to the Windows world, where the first question is "what software will.." instead of "how do you ...". Often you already have the tools at hand. Spending some time searching the packages you have available might be enlightening.
Also scan through the mount manpage. Also the manpage for losetup, which can come in handy to attach a loop device to an image file.