http://bit.ly/4uXRXm is rebar's current home. Although I think it's
moving to http://bit.ly/7RRuM6 shortly.  I patched it last week to
painlessly compile LFE if there is lfe source present in src.  Give it
a try.  All you need is an otp app w/ an .app file in your ebin dir
and rebar does the rest.  ( Examples will follow )

I have updated my example LFE otp application to use rebar.
http://github.com/dysinger/lfe-otp-ping-pong/ - √ it out.

Also if you want to use rebar in your own LFE applications

~/src hg clone http://bitbucket.org/dizzyd/rebar
~/src cd rebar/
~/src/rebar ./bootstrap
~/src/rebar cp ./rebar /to/my/lfe/or/erl/otp/application/root

Check out the riak project hg.basho.com/riak for a thorough example of
a bigger OTP setup with rebar.

-Tim