If you’ve been holding off on upgrading the favorite tracks in your iTunes Library tracks to Apple’s new DRM-free iTunes Plus version, after Phil made the announcement at Macworld ’09, simply because iTunes only allowed you to upgrade your entire Gigabytes worth library at once, this may come as the day’s best news.

Apparently, Apple is now allowing users to upgrade their tracks to the iTunes Plus version on a per-track basis. Chris Breen at Macworld reports that if you hit the ‘Upgrade To iTunes Plus‘ (iTunes link) on the Store’s Home page, iTunes not only gives you the options to upgrade your entire library at once, but also lists the protected tracks and albums in your library, which you can browse through and choose to upgrade to iTunes Plus according to your choice and needs.

Remember, it still costs 30 cents to upgrade a track to its iTunes Plus version and upgrading Music Videos will cost your 60 cents. You may also choose to upgrade entire albums, which are priced between $3 to $4.

Important note: If you use iTunes’ Shopping Cart for purchasing media and add an album to that Shopping Cart, it will be listed at full price rather than the upgrade price. Click the Shopping Cart’s Buy Now button and you will pay full price for the album ($9.99 versus $3, for example). For this reason, until Apple irons out this glitch, be sure to set iTunes’ Store preference to Buy and Download Using 1-Click.

So what’s your library looking like? Is DRM-free and higher bitrate worth the extra 30 cents? Or was it not that much of a bother in the first place?