Yep got that one too

No linking of MP3 files, no MIDI support. And I did ask the developers and they said those things would not be coming anytime soon.

Still a great app, but this one (Gigbook) is more a pure chart reader only.

Also folks, check out another little app I found...
OnSong for iOS

Looks pretty neat too as it allows the direct importing of all those thousands of charts in Chordpro format...You know with the lyrics typed onto a sheet with the chord inserted above the line where it is played...as well as reading .doc, TXT and PDF's

Looks alright I reckon