Mondo Rescue and Mindi Linux are used primarily as Linux backup and cloning tools. The fall in prices of CD-RW drives and writable discs will allow current users to keep good backups and future users to leverage the cloning capability.
Tape drives are more likely to suit your needs if you run a larger installation (or have lots of MP3's).
I have tested it a thousand times on my own computer with my own data and with no alternate backup regime. It worked for me. Thousands of users testify to Mondo's stability and its ease of use. However, please test it on your own system before you rely on it. In fact, do not rely on any software until you have tested it to see if it performs as expected.
To establish that Mondo will behave well in an emergency, please be prepared. Run a test backup as follows:-
Run mondoarchive without any command-line options.
Next, restore archives to your live filesystem.
When mondoarchive terminates, run mondorestore without any
Finally, simulate an emergency restore.
Boot from CD/floppies.
FYI, the subroutines to repartition and reformat your drives are very stable. If you are a RAID or LVM user, you might encounter some difficulties when wiping and restoring from scratch because of the sheer range of filesystem layouts and the impossibility of testing Mondo on every single one. If you have trouble, just drop to the command-line and partition/format manually. Then, call mondorestore, select Interactive Mode, and say 'no' when asked if you want Mondo to partition or format your drives for you.