RECOROID android application is voice memo and telephone conversation recorder included widget. Supported recording conversations by headset on OS1.6 or higher. Best option out there for the Hero. Incoming volume could be a little louder, but its a highly functional program.
*updated
share file by menu button at player. Change recording time limit to 30min or limitless
RECOROID was developed for Android by KAYAC Inc.
Package name : com.kayac.bm11.recoroid.apk
Download RECOROID Android apk V 2.4.1.7:
http://www.mediafire.com/?zzyh2zwwzgm