I am posting this from a Persistent LinuxMint-8 (Helena) '8GB' USBkey which has retained all my Package additions, x121 Updates and a lot of mint Home files.
It was created from a downloaded 32-bit Main Edition ISO file by using LinuxLive (aka LiLi) Version 2.2, downloaded from http://www.linuxliveusb.com/
, unpacked and run in WinXP because LiLi doesn't currently like Win7. Also see attached HelenaUSBCreation picture.
Benefiting from using this '8GB' key (http://www.misco.co.uk/applications/SearchTools/item-details.asp?EdpNo=270484&CatId=3458
, its nominal 4000MB of Persistent File Space has been used up with x121 MintUpdates and the Package Manager addition of ubuntu-restricted-extras, promptly followed by Removal of ttf-mscorefonts-installer, leaving Flash, Java and LAME behind, for the addition of sound-juicer (aka Audio CD Extractor), then modified for 32-320K VBR MP3 ripping upon the insertion of an Audio CD into the host PC's optical drive. Other Package additions and capabilities can be deduced from the attached LinuxMintHelenaLiveUSBScreen picture, currently still leaving about 2GB of working space for further Updates etc.
Sadly the Brasero 2.28.2 doesn't include the automatic Checksum Verify of Gloria's version, but works quite well, as does Exaile (which I prefer to the more complex Rhythmbox), as does AcidRip's xvid 2-pass coding.
You should note that I'm using the more flexible, on-the-fly resolution changing default Preference, Display driver rather than a Restricted Driver, allowing quick yet also retained resolution matching to the host PC's graphics card.
I haven't yet tried Install from the stick, to see if its already added to and configured contents get installed, but it's a great Helena Live demonstration as well as a general Linux tool, when supplemented by Patrick Verner's PartEdMagic 4.6 plus Clonzilla !